iran worns the u.k. against escalating tensions in the strait of hormuz. and the u.s. president trying to free an african-american rapper detained in sweden. also, 50 years since apollo 11. how the mission to the moon may help us get to mars. >> we want to welcome our viewers here in the united states and around the world. i'm george howell. >> i'm natalie allen. "newsroom" starts right now.

>> the u.k. is accusing iran of illegal interference when it seized a flagged oil tanker. the u.k. says the tanker was in omani waters when iran's military captured it. the u.k. says there's no doubt it's retaliation. but britain's foreign secretary says iran is flat-wrong. >> they see this as a tit for tat situation of grace one in gibraltar. it was legally x lly carrying o. it was seized in omani waters in clear contradiction of law.

it was forced to sail into iran. this is totally and unacceptable. it raises serious questions about the security of british shipping and international shipping in the straits of hormuz. >> and this tweet from iran's ambassador just a short time ago, warning the british government against escalating tensions, calling it dangerous and unwise. na nato, france and germany have contempted the action. but tehran does not appear willing to change its course. >> to date, we have seen no indications that the iranians are prepared to change the direction of their nation, to do the things we asked them to do on their nuclear program, their missile program, the maligned behavior around the world. you can watch their actions. these are actions that threaten. we saw the statements of foreign

minister hunt. i spoke to him yesterday. we saw the actions. these are not the actions of a country that looks like it's headed in the right direction. >> about one-quarter of the world's oil passes through the strait of hormuz. the u.k. has advised british ships to avoid the waterway. and the u.s. maritime administration has warned ships to exercise caution. >> matthew chance is following the story for us in the uae. good to have you with us, matthew. is there any sense of what is next and any resolution at hand? >> reporter: i think a resolution is the next point.

british officials will be speaking with their partners to try to get the release of this ship, and to protect any other flag ships that may come under threat in the future in this persian gulf region. they're moving in a royal navy, british navy warship into the region to provide that kind of additional protection. of course, this is a dangerous situation, and it's not a bilateral -- you have to set it against that backdrop between the united states and iran, with the downing of each other's drones. and the escalating military tensions, putting the forces in this region. at one point, being minutes away from a confrontation with iran, we're told. it's a dangerous environment at the moment. and it's easy to see how an

episode like this easeizure of e british flag ship can spawn things in a dangerous way. the irony, running through all of this, george, is britain was one of those countries that had been against imposing more sanctions on iran. it's a signature to the nuclear deal. britain was trying to keep iran within the international fold. those efforts will have been damaged by this latest spat and this seizure of the oil tanker. >> and that leads right into my next question, matthew. the question, this divide, now, certainly iran and the u.k., this tit for tat. does this push the united kingdom closer to the united states now? it could well do, couldn't it? you can easily see, if not -- the will in the united kingdom,

to pursue this idea of keeping i live the iranian nuclear agreement, would be undermined by this latest episode. and all along, the united states has been saying iran is a maligned force that has to be confronted in this region, in the persian gulf region. i expect this latest episode will have guinn some sympathy to that point of view in british circles that might otherwise have had a contradictory point of view to that. >> does it push the u.k. closer? does it push europe closer? matthew chance for us live. matthew, thank you. want to talk about it with richard dalton. he joins us from london. ambassador, thanks so much for being with us. >> good morning. >> good morning to you. what is your threat assessment of iran right now? it has shot down a u.s. drone,

seized a u.s. tanker and the british government says there will be consequences if it's not returned. how dangerous has this become? >> this has become slightly, but only slightly more dangerous. the confrontation between the united states and iran, is the one we need to be watching. and that's currently in advance. your correspondents are right, that we're in a period of waiting to see just what the u.k. bottom line and the iranian bottom lines are going to be. the british are making a strong case that they are not linked in the sense that the iranian seizure was against international law. but the one in gibraltar was done in accordance with relevant law. but that distinction is going to be lost in the next phase because it's a practical negotiation. each side wants to see that

property released. it is an issue that can be resolved. relations are bad between britain and iran. and it may be necessary for a third party to assist. that third party wouldn't be the united states. and i don't think thisissue is going to significantly increase any interest in the u.k. and being close to current united states policies. >> right. the u.k. has threatened serious consequences if the tanker is not returned. its foreign secretary says they're not considering a military operation. what could their response be? >> well, i think sanctions is the area they're going to look a at. they are obliged in the u.k. to respect the collective decision of the european union, to suspend nuclear sanctions on iran because iran is in full compliance with its major

obligations under the jcpoa. that's the iran nuclear deal. the infractions, which iran has recently entered into are reversible and not being considered by the european union and the u.k. as significant enough of the reintroduction of the nuclear sanctions. it's a difficult area to find a sanction that would bite, that keeps distinct, this very important maritime crisis from the, frankly, more important and long-term significance of the nuclear issues that still have to be resolved. it's not clear what serious measures the u.k. is currently thinking about. >> well, we heard from secretary pompeo of the u.s. saying of iran, these are not the actions of a country that looks like it's headed in the right direction. we hope they will sit down and discuss the items with us. can more sanctions get iran to

the table? >> well, frankly, the united states is not in the position to talk about moving in the right direction or iran not being a normal country. the united states' behavior has been in the wrong direction. it's not been normal. that's the reason we're in this pickle. the disparity of power between the united states and iran is immense. and iran is retaliating for the misdeeds inflicted on them as they see them, with some justification, using the power they have. that involves taking liberties with international law, which, of course, is wrong. this is a political situation, which has to be addressed politically, through negotiations. first, defusing the maritime crisis. then, moving on to resume the nuclear de-escalation talks, which were led a fortnight ago by president macron. and if we get through those two stages and have still got a

jcpoa in force, moving on to dealing with the long-term strategic questions that vexed the united states and all of the states in the region, including iran. >> and you've been ambassador to iran. you understand iran more than most. we know that hard liners are taking these positions that we've seen. we've seen video of the revolutionary guard taking over the british tanker. give us a sense of what we're dealing with here, as far as those making decisions about this in iran. >> the tone taken by the supreme leader. the united states reneged on the nuclear deal, totally unjust if iibly. and the rest of the community have not been able to make good on the economic promises to iran

contained in the nuclear deal. supreme leader is riding high at the moment. he's able to say to the moderates, i was right to distrust these people. you were wrong to think that you could change iran's situation for the better by compromising so far on nuclear questions. so, at the moment, when it comes to the desperate situation of the iranian people, under the u.s. economic war of iran, there's unity that iran has to walk tall, has to show the international community that, when important international agreement falls apart, through no fault of iran, that those consequences visited on iran aren't going to spare those who have supported this. that is why we've seen this measured response by iran to, what has happened to it, in totally unjustifiable acts

against marine navigation amongst other things. this is a serious situation. and diffusing it is not a matter of insisting iran calms down but insisting on all sides. >> that sounds like something that does need to happen, doesn't it? we appreciate your insights. richard dalton, former ambassador to iran. thank you so much. british airways announced saturday it is suspending flights to cairo for seven days. >> it is a security precaution. the airline did not cite a specific threat. but the foreign office is warning of a heightened terrorism risk to aviation. lufthansa suspended flights but said trips would resume on sunday. a american rapper in a swedish jail. how donald trump is trying to help asap rocky.

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of a swedish jail. >> however, their president says the court system is completely independent and won't be swayed by outside pressure. mr. trump told the president the rapper is not a flight risk and vouched for his bail. asap rocky has been jailed for weeks on assault allegations. >> let's go to david culver. good to be with you. our first time together. what do we know about the rapper? why is he being held there? >> hi, george. we know this dates back to three weeks ago today. it was a street fight in stockholm. three weeks that the rapper has been in jail. and it looks like he will stay in custody until at least thursday. that is according to a ruling of a stockholm district court. i've gone through the videos that appear to show the confrontation from three weeks back.

the problem is, some of them have been edited. prosecutors say they need time to investigate and determine whether or not to charge the rapper. with all of the pressing matters on trump's agenda right now, including raising tensions with iran and north korea, he's using his political sway for this. the situation in sweden, that the president refers to, involves jailed american rapper and producer rakheem mayers. who goes by asap rocky. >> i can tell you that his support from the african-american community in this country. >> reporter: asap's 10 million instagram followers have not heard from him for three weeks now. the artist is in custody in

stockholm. swedish authorities detained him on suspicious of assault in connection with a brawl on june 30th. this edited video posted by tmz, appears to show asap's involvement. but other videos paint a different story. >> we don't want problem with these boys. they keep following us. >> look at this. >> asap telling his fans these men kept following them. alleging they threw headphones at his bodyguard. >> the stockholm district court said that asap should stay in custody until july 25th. the rapper's lawyer said the court's decision was expected but unfair. the lawyer says his client, quote, believes he was assaulted and acted in self-defense. president trump tweeted he called sweden's prime minister and told him that asap, quote, was not a flight risk and offered to vouch for his bail. despite the scandinavian country

not having a bail system. it's earned the president praise from some celebrities. kim kardashian thanking him for helping asap reform. singer, justin bieber, weighing in, too. tweeting to the president -- i appreciate the president trying to help him. while you're at it, can you let the kids out of cages? a reference to the migrant crisis along the u.s./mexico border. what does sweden's leader have to say about all of this? the prime minister spoke with president trump. he characterized it as a 20-minute phone call addresatur. he told the president, his government neither can nor will look at the process to the case. they plan to talk further on this matter in the coming days. >> politics is never far from this. critics would raise questions about the timing around all of this, after a very rough week for the president on the issue of race.

tell us more about that. >> no question. this past week, he not only received a lot of criticism for the racist comments and the chance that surfaced at a trump rally, from folks within the country, but here in the u.k. the u.k. leaders are the first world leaders to condemn those comments. it seems that the president may be using this as an opportunity to push past that racist rhetoric and take action. this would be the action that would show, perhaps, those were not intended to be racist remarks. several times friday, george, he was speaking to reporters in the oval office, that he made reference to the african-american community, he says has a lot of interest in this case. they have a lot of support for asap rocky. and he goes on to say, not only the african-american community, but everybody in the country, the president says, he says, we are one. it seems this is an attempt to

bring some unity. the question is, does it heal some of the wounds that surfaced this past week? >> indeed. keeping in mind the african-american's thinking many, many things. it's interesting to see where this goes from here. david culver, we appreciate your time, thank you. millions of people across the u.s., as we've been telling you, are feeling a potentially dangerous heat wave, from the great plains to the east coast. huge swaths of the country face temperatures well over 100 degrees. >> but the numbers don't tell the whole story. there is also the heat index, making things even worse. police in massachusetts are asking would-be criminals to hold off in committing crimes, at least until monday. that's what they're saying. >> how about just stop doing crimes, period, in all weather. my goodness.

oklahoma is feeling the heat, too. so much so that this road couldn't handle it. police say it buckled under the extreme temperatures. yes. would-be thieves, these don't use that road. >> if you're going to rob the bank, wait a few days, until it's cooler, i guess. >> all right. ivan cabrera is here with the latest forecast. >> i can tell you, it's going to cool off. maybe that's a bad thing at this point. all right. let's check in outside. folks, it is the last day here of our heat wave, at least for places like new york and philly. d.c. will have another warm day in philly. look at the red number there. it's indicative of how hot it has been throughout the night. you factor in the temperature, along with the humidity. you have to do that. that's the way it feels outside. that's why we've not been able to recover. these are the heat indices across the eastern u.s.

notice chicago, front through there. it's yet to arrive and will take another day for that to happen. in the meantime, we have more heat warnings in effect. 95 million people, and temperatures feeling like 105 to 110. or heat advisory in the orange, between 95 and 105. that's throughout the day today. there's the front. it will continue to push to the south and east. i'll show you the potential for storms in a second. look at the numbers here. we did this on saturday. it felt like 110. we had a heat index in d.c. i think we may be at that again for later this afternoon. the extreme heat for one more day. and there comes the front with showers and thunderstorms. it will be cooler in the cloud cover and the rainfall. cooler air on the backside of this front, that will provide us with a potential of severe thunderstorms. kansas city will watch for a level two of five. large hail, damaging winds and isolated tornadoes. here are the numbers, again.

upper 90s to low 100s. that's without factoring the humidity. and temperatures get back to where they should be. it's a july cold front. don't expect chilly temperatures overnight. but expect temperatures back to where they should be for this time of year. and i will leave you -- this is for natalie allen. i know how she loves when things bake in the heat. >> there's some in nebraska. my goodness. they are done -- i don't know how that tasted. making me hungry. >> uh-huh. >> it igs late, though. a new voice on capitol hill, calling out racism. what one lawmaker is telling the leader of the free world. and protesters are not backing down until the island's governor is out. tell you why they have completely lost faith in his leadership.

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just text listen5 to 500500. welcome back for viewers here in the united states and around the world. you're watching cnn newsroom live from the atl. i'm george howell. >> i'm natalie allen. here's our top stories. president trump is trying to win the release of asap rocky. mr. trump reached out to sweden's president to vouch for his bail. but sweden doesn't have a bail system. sweden's prime minister says their court system is independent. police in canada are investigating what they are calling the double-homicide of two, young tourists.

the bodyies of a woman and her boyfriend were discovered on a remote highway. police say it's not clear if the couple were targeted or if it was a crime of opportunity. the u.k. says a british oil tanker was in omani waters when it was seized by iran's military. in a letter to the u.n. security council, the u.k. accused iran of illegal interference in commercial shipping. the tanker and its crew remain in iranian custody. this is into our newsroom. we want you to listen to audio we've received of radio messages from an iranian vessel and a british warship to the british flag tanker, before it was seized. listen. >> you will be safe. if you obey, you will be safe. alter your course, to 263 degrees immediately. >> this is fox trot 236.

i reit rate, your passage must not be impaired, obstructed or hampered. please confirm. >> fox trot 236. this is navy patrol boat. no challenge is intended. no challenge is intended. i want to independent the ship for security reasons. over. >> our matthew chance, covering this for us from the united arab emirates. there we have it, matthew, audio of how this came down. it is chilling when you consider what happened next. >> well, exactly. you heard then, the iranian captain informing the british warship that no challenge was

intended. that had been moments before, the fast patrol boats circled the ship. then, special forces descended on fast ropes from a helicopter, that was covering above its deck. the special forces, with their faces covered and wielding weapons to take control of it. they were ordering that ship to change course and presumably enter iranian waters. what the british warship was trying to do, and it was too distant to take any physical action. it was first of all, informing the ship of its rights. saying, you don't have to do this, essentially. you are plying legal, legitimate trade in these international waters. and the british warship addressed the navy, as well, and said, please confirm you're not

trying to impede this legitimate british flagged vessel. an extraordinary exchange that has emerged, leading up to the eventual seizure by the iranian military of this british flagged oil tanker. >> and u.k. warship as you mentioned, wasn't close enough to intercede anymore, because as you say, these fast boats moved in and they repel from helicopters, as they seize this ship. but now, i do believe that the u.k., the united states, are considering beefing up their navy resources in that area. >> certainly, the british are -- they sent a second warship into the area to beef up that security for british flag vessels. but from an issue domestic point of view, there's questions being asked, as to why a threat level so critical in the persian gulf region, more wasn't done to

provide the protective convoys, the extra british forces in the area, that could have provided t protection for that shipping. that is the question that is going to have consequences in britain. what we're waiting for now, is the announcement by the british government what the next steps are going to be. they're consulting with their allies and partners, the possibility of sanctions has been floated in the british media. british officials have ruled that out. they haven't confirmed what they are considering, either. this has the potential to escalate into something more dangerous. they say they want a diplomatic solution to this and not a military one. >> matthew chance for us. the latest on this audio we just received of that exchange, before they took over that vessel. thank you so much, matthew. back here in the states.

one of the u.s. congresswomen on the receiving end of racist attacks by the u.s. president is firing back. >> alexandria acasio cortez slammed him in a town hall in new york. she accused him of his policies of ethnicity, after the tweet s targeted her and three other congresswomen of color. >> this president's policies are about ethnicity and racism. we know he's been thinking this the entire time. but he's been keeping it in here. and this beak, it went out here. he started to tell american citizens, where are we going to go? we're going to stay right here. that's where we're going to go. we're not going anywhere.

>> they are american citizens. president trump seemed to single out ilhan omar. she was the focus of racist chanting from a crowd in south carolina. >> reporter: it appears that president trump wants to have this both ways. just a few days after saying he tried to hush the crowd, he tried to speak and interrupt the people who were chanting, "end her back" at his wednesday night rally in north carolina, the president is tweeting that the people are great patriots. this is what the president sent out. as you can see, i did nothing to lead people on. nor was i happy with their chant. just a big and patriotic crowd. they love the usa. two important things to point out. in that tweet, the president is retweeting someone who is supportive of those chants, suggesting that send her back is

the new lock her up, the chants we heard in 2016 about hillary clinton. secondly, these supporters are echoing something that president trump tweeted himself a week ago. he was contradictly, about whether this has been beneficial for him. he said he was winning the political fight on friday night before he left for a weekend at his estate. the president said it didn't matter whether he was winning or losing and he had to speak up. i want you to listen why. >> i don't know if it's good or bad politically. i don't care. when people are speaking so badly, when they call our country garbage, think of that. that's worse than deplorable. they call our country garbage, i don't care about politics. >> critical to point out in the public record there's no indication that any of the four

congresswomen said that the country is garbage. he is trying to paint them as extreme and try to elevate them and make them the face of the democratic party, saying that the democratic party is too extreme. boris sanchez, cnn, traveling with the president in new jersey. protesters in puerto rico are taking demands straight to the governor's mansion. >> on saturday, dozens of people, they chanted and banged pots and pans. they are demanding that the governor resign. but he is refusing to do that. >> the public outrage was sparked by a leak of offensive text messages between the gov n governor and his aides.

the island is suffering from high poverty rates, crushing debt and recovery from hurricane maria. u.s. democratic presidential candidates are supporting the protesters. we go to san juan to join the course of voices demanding that the governor resigned. she spoke with nick paton walsh there on saturday. >> i'm doing what i can to lift this up for the national conversation and calling on leaders in the united states of america, to stand with the people of puerto rico, against corruption and for the people. you're right. this is not about partisan politics. we're seeing bipartisan calls to action here from puerto rico, against the corruption, across their government. that's the same call to action we need to support here and that we need to support in the united states government, as well. cory booker tweeted this -- it's clear the protesters' confidence in the island's leadership is gone. and they're right to demand the

leadership they deserve. >> pete buttigieg wrote, he needs to resign and give the puerto ricans a leader they trust. and camera harris said, the only path in puerto rico, is to speak truth against devices and corrupt leaders. >> we'll here more when cnn hosts the next presidential debates. sanders and elizabeth warren.ie- they will be joined on tuesday, july 30th, by pete buttigieg and amy klobuchar. >> and the second night will be a rematch between kamala harris and joe biden. that's on wednesday, july 31st. joining them, cory booker and former housing secretary, julian castro. still ahead here, the extradition bill is extended. but hong kong protesters are not giving up. this live image in hong kong.

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demonstrators are not backing down in hong kong. you're about to see how many have come out again. they are in the streets protesting that same controversial bill. >> at 5:44 p.m. in hong kong, people are out in force. a big show of force there. the measure would have allowed extradition to mainland china. hong kong chief executive carrie lam announced that the bill was.

>> anna coren is live in hong kong for us. there's been weeks of these p protests. you've been in them. how does this one compare? >> natalie, the protests have been extremely peaceful this afternoon, for the last few hours, it has been a march from causeway bay to where we are now. the protesters have diverted and have occupied this major thoroughfare. the protest was not supposed to come here. and if we bring our camera, our cameraman is going to swing the camera around. the protesters are marching towards the final court of appe appeal. that is about 500 meters, from where we are standing, if not further. that's where the original march is supposed to go to. that's what the civil rights front wanted. however, the police said no, it was unsafe to do that. protesters defying police orders. and it's interesting.

in the last half an hour, you're getting a sense that things are changing. protesters are putting on their face masks. they have their goggles and gas masks. they are anticipating what lies ahead. we also walked past the police headquarters here in hong kong. there were dozens of riot police outside, clearly visible, to the protesters. if you come over here, as brad is bringing the camera over here, this is the police erecting these two-meter water barriers around the complex. they, too, are not taking any chances. this time, obviously, in the past, protesters have managed to make their way through where the barricades have been erected. this seems to be a different situation. it's taking on a bit of a darker

tone, if you like. protesters are anticipating that the police are only going to tolerate this for so long. this is a major thoroughfare in an international city. it is sunday afternoon. and so far, police are allowing the protesters to occupy the streets. this is not going to last. we should note that it is, obviously, sunday afternoon. but coming in to monday morning, police are going to make sure that these roads will be cleared. as to how long the protesters are willing to hang around for, natalie, we just don't know. i should note that over the weekend, three men were arrested. it was the largest seizure of explosives here in hong kong. it was tatp that was found in a warehou warehouse. we don't know if there's a connection between the explosives and the protests.

police are asking everybody to remain vigilant, natalie. >> anna coren in hong kong. thank you, anna. history was made 50 years ago this weekend. we look back at the mission that brought the first man to the moon. here's another reason to join t-mobile. do you like stranger things? sure you do. that's why netflix is on us. and here's another reason to join. bring in your discount, and we'll match it. that's right. t-mobile will match your discount. they have businesses to grow customers to care for lives to get home to they use stamps.com print discounted postage for any letter any package any time right from your computer all the amazing services of the post office only cheaper get our special tv offer a 4-week trial plus postage and a digital scale go to stamps.com/tv and never go to the post office again!

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come back right. okay. engines stop. control both auto. and arm up. 413 is in. >> we are copying you down here. >> the eagle has landed. >> tranquility, we copy on the ground. you have a bunch of guys that are about to turn blue. we're breathing again. >> that was the moment a major leap of faith and focus. the hope is it took for them to forever change history. neil armstrong and buzz aldrin landed on the moon. a first for humanity. the 50th anniversary of this historic mission is being

celebrated this weekend. aldrin was honored by a standing ovation by mike pence. armstrong died seven years ago. >> five, four, three, two, one. and liftoff. 50 years after a small step for man, the soyuz rocket and its crew take a giant leap. >> what would the anniversary be without a space launch. this was the blastoff of the russian soyuz spacecraft from kazakhstan. >> good timing there. there were fireworks, too, over the nasa space center in houston, texas, on saturday. they were set off at the exact time of day that armstrong made his small step and giant leap. then, there's the space suit that armstrong wore. it's on display at the

smithsonian museum. what does that hold for the future of exploration? >> it is the mission to mars for one group. c cnn's paul buchanan with that. >> reporter: 1957, the russians launch the first at lite into space. and it rattles john cassani, a young engineer. >> we were going down the steps. and we saw sputnik going across the sky. that was a devastating blow. we realized, we were nowhere near that. >> the united states began its ambitious quest to put a man on the moon. in california's jet propulsion laboratory, they leaped into the surveyor programs. >> and worked. >> reporter: they wanted answers on the surface. >> with astronauts sinking 14

feet into the taalcum powder. that the moon was a reasonable place to put a spacecraft down. >> and the manned apollo program would follow. now, jbl is riveted on the red planet. >> we learn from their reconnaissance of the moon. we apply those lessons to reconning mars and understanding it from an orbiter perspective. >> eight times they have landed on mars. including insight and the curiosity rover. they are working on the 2020 rover. >> these missions to mars. they have a science focus. we're learning about the geology of mars. each one makes a small contribution toward the goal of getting humans to mars.

>> reporter: sherlock will search for signs of life. >> this is a replica of the moxie instrument. >> reporter: and moxie, turning the atmosphere into what the astronauts can breathe. >> one small step for man. >> reporter: but first -- >> one giant leap for mankind. >> reporter: the first plan is to put humans back on the moon. >> we have done that. we didn't stay more than a day or two. can we get to mars or the moon and stay there on a more or less permanent basis. >> the massive brains here believe their heavy lifting, the unmanned missions to mars, will put an astronaut on the red planet. they want to remind everyone that here in pasadena, they believe they are the center of the universe. paul vercammen, cnn, pasadena, california. >> that's our show. >> the news continues after the break.

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. ♪ i take what's mine the detention of an american rapper in sweden now has the direct involvement of president trump. >> president trump tweeting saturday that he called sweden's prime minister and offered to personally vouch for his bail. despite the scandinavian country not having a bail system. there is an elevated safety issue we now have thanks to the president. >> ocasio-cortez said this white house rhetoric about immigration is not about immigration at all. >> if this president is actually serious about security, then he'll stop acting and using the words ofhi