this is bbc news. the headlines: violence erupts on the streets of venezuela — opposition leader juan guaido says he's started the "final phase" of his plan to oust president nicolas maduro. thousands of haemophiliacs infected with hepatitis c and hiv — an inquiry begins into how their blood was contaminated. a new police investigation into

the deaths of hundreds of patients at gosport war memorial hospital is to take place. labour's governing body agrees to support a second brexit referendum — but only if other options fail. and, japan's emperor akihito gives up his throne in a formal ceremony — the first emperor to do so in over two centuries. that have been dramatic scenes and clashes on the streets of the venezuelan capital, caracas, as the opposition leader urges people to topple nicholas maduro. one why do started the final phase of his plan to oust the president. as crowds grew, a venezuelan national guard vehicle was seen to run into people who were throwing stones and hit the vehicles with bricks. these wordy

pictures takenjust vehicles with bricks. these wordy pictures taken just before that happened. there is feeling authorities say they are reacting to what they describe as a coup attempt, afterjuan guaido declared himself president in january. attempt, afterjuan guaido declared himself president injanuary. he said he had spoken to military leaders and had their total loyalty. we arejust leaders and had their total loyalty. we are just looking at the delayed pictures coming out of caracas in the last few minutes. we are keeping them on a delay because it is pretty sensitive on the ground and we don't wa nt to sensitive on the ground and we don't want to show anything that may be disturbing. those are the pictures at the moment. there has been a big security crackdown, it is unclear exactly how strong the level of support is forjuan guaido. but he has, of course, been backed internationally by dozens of countries and by a number of

international leaders. it looks pretty calm and there from what we can see at the moment but it has been a pretty thought few hours. juan guaido actually spoke to the media in the last few hours. he called for the military to give him support. translation: the armed forces, not only in caracas but across the whole country, are on the side of the constitution. we are now asking all venezuelans to constitution. we are now asking all venezuela ns to take constitution. we are now asking all venezuelans to take to the streets to claim what we have not been given, as citizens throughout all these years. the bbc's reporters gave us this update a short time ago. iam now gave us this update a short time ago. i am now standing very close to wherejuan ago. i am now standing very close to where juan guaido claimed

ago. i am now standing very close to wherejuan guaido claimed he was, along with prominent opposition... around this airbase and the surroundings, there are a lot of opposition supporters, following juan guaido's caller to put an end to nicolas maduro's presidency. we have seen on thrown bricks, groups of protesters confronting the national guard, who is in charge of protecting this facility. the national guard, in return, has been firing tear and pellets, we are also hearing, some real ammunition has been shot in some way. the peaceful transition of power, the peaceful transition of power, the peaceful transition of power, the peaceful transition of territorial control. for the military to support the

constitution. this constitution that juan guaido and myself, as his representative, are supporting was actually drafted and passed under hugo chavez. they have never defended it. the situation is dire, we have 18.7 million people losing weight rapidly and the lights are about to go out. if this fails? i certainly hope it doesn't because we have millions of venezuelans who depend on the military coming out in support, in doing the right thing, and taking this historic step to defend the constitution. there have been more reaction to events in venezuela from the us. the vice president, mike pence, has

the us national security adviser, john bolton, has written:? 7 obviously, john bolton, has written:7 7 obviously, a lot of support coming from the tom administration. here, the foreign office administered data for the american has praised juan guaido, also, for his courage, creativity, and religion. in a tweet, he said:7 we can see some level of the western support coming in, we have seen that building in recent months and we will be following the situation on

the ground throughout the evening here on the bbc news channel. beyond 100 days is coming up at 7pm, before that, let's go to sports day. hello, and welcome to sportsday. i'mjohn watson. we are live at the tottenham hotspur stadium, head of the semifinals of the champions league. tottenham, 180 minutes away from a first champions league final in the club in‘s history. no one believe that ajax can arise out this final, the same for totte n ha m. out this final, the same for tottenham. but we are there because we deserved to be today. it ajax you play them tonight. the latest crop from the famous youth system hoping to halt their progress. and i'm jane dougall at the bbc sports centre.

also coming up in the programme: spectacular snooker from gary wilson — he fights back in his world championship quarterfinal at the crucible to give ali carter the blues. and, speed skater elise christie speaks very honestly about suffering from depression. this is what the stadium was built for, these big european nights. i don't think even mauricio pochettino would have been expected to be playing in a champions league semifinal so soon after the opening of this stadium such has been their performances in this tournament so far. they are here in the last four of this competition. they have been the story of the competition so far

but so too have their opponents ajax, having knocked outjuventus and the alma dead on their way. it's been a generation sense ajax have entered this far in europe, you have entered this far in europe, you have to go further back for totte n ha m. have to go further back for tottenham. this is 21st century football, all their messes and barnardos, spurs and ajax have broken the mould without breaking the bank. the team deserve a lot of praise, the manager, the players, they are doing a fantasticjob. no one believe that ajax can arrive to this final, the same for tottenham i think. but in the end, we are there because we've deserved to be. and how. spurs survived a group with barcelona and inter milan. ajax meanwhile have stunned europe, beating the army did and juventus in the knockouts, their young side

winning in spain and italy. tottenham's recent form has been a bit indifferent. the dutch side have stuck to the ajax way, elevating youth from the academy level. the amsterdam club have ripped up their wage structure to hold on to a couple of their best. the philosophy has always been playing attractive football. educate your own players, get as many of them into the team. if you have a lack of space in the team or not the right players from the academy, then you should look for a transfer. but signing a superstar is not the ajax way. instead, they have taken premier league offcuts like delhi blend and lu ce nt league offcuts like delhi blend and lucent had h. last season, we had maybe a lack of experience. we were looking for experience, will it on purpose in the premier league

because they know how to win titles and beat your biggest opponents. the biggest of opponents will be watching from the stands, harry kane injured, son heung—min suspended. spurs secondary strike force will need to fire. we need to counter with other players, we need to counter with the squad. other players will have the operator tube to show and have a good job. for ajax, the opportunity to rekindle the glory years. for spurs, the chance to go one step further from the grates of 62. it is astonishing to think that touch on the only one point from the three opening games but here they stand, two games away from a place in a chinese league final. interesting to hear the voice of mauricio pochettino, saying that reaching the semifinals of the champions league is as big as

winning a domestic cup. it is a huge night, no doubt about it, for the fa ns night, no doubt about it, for the fans gathering here tonight. let's get the fort offers some of them before the game. it's a champions league semifinal, it gets no bigger, apart from the final. probably the biggest game played here so far, probably the biggest to be played here for a long time to come. yes, it's a huge game. it's absolutely amazing and i'm really proud of what tottenham have done. the journey they have been on, getting out of they have been on, getting out of the group stage and coming to the semifinal it'sjust the group stage and coming to the semifinal it's just amazing. the group stage and coming to the semifinal it'sjust amazing. we have never been to the semifinal of the day, if our players don't step up to date... the finish line has got to be madrid, hasn't it? they will come to us but i think we will get him on the counter. they have never been to a semifinals of a champions league before, are tottenham a little tired7 as we know, the loss for the first time in the premier league here against west ham, are they

coming into this little leggy7 absolutely, they will be the more tired of the two teams. they played west ham at the weekend, they look tired. there were some mistakes made by spurs players then. ajax, on the other hand, have had over a week's rest, they played the last game last week, they will be more fresh, more fitter. we will touch on ajax's preparations a little later on in the programme. how significant is the programme. how significant is the absence of son heung—min and harry kane7 harry kane may return for the final if tottenham get there. absolutely, big injuries, big players missing. son heung—min is the key absentee because he scored 20 goals in all competitions and all —— this season. he scored the winner here against city, and he scored against dortmund, they will certainly miss him today. how

special is this for tottenham7 they build this stadium in the hope of qualifying for the champions league regularly. mauricio pochettino saying that they have over delivered by qualifying as soon as they have done. how special is this for the club7 done. how special is this for the club? i've been speaking to fans for the last couple of hours. they all say the same thing, a hugely special night for them. they were worried it wouldn't have champions league football here at the stadium because how they started at the group stage but they turn everything around now have the dream of playing the first european semifinal in years was up a huge night. as we know, is a huge amount to, for tottenham. he was night tomorrow for liverpool, who are also in action. they take on barcelona. you wonder, is that as it isa barcelona. you wonder, is that as it is a feeling that the champions league trophy could be returning to england for the first time since 20127 i discuss that with dion dublin, who is on summarising duties

tonight. it's a very, very nice for english clubs to be doing well in the big competitions. i've never been here before, i still haven't been here before, i still haven't been in, and quite excited to get in. i'm hoping the punters will get m, in. i'm hoping the punters will get in, need of nights, get behind their team. i think spurs can do can do it. do you think we will seal the two fee returning to england? will the champions league be returning to england for the first time since 20127 england for the first time since 2012? the quality of football in the premier league is so high that i think it's only a matter of time before an english time brings it back to our soil. we had was to get over there, ajax at the moment are playing unbelievable football. their energy, the youth system reaping rewards again. lots of hurdles to get over. i think, in a matter of time, it is going to be here. interesting, it mauricio pochettino saying that getting to the champions league semifinal is a big

achievement than winning a domestic trophy, do you agree with that? not really. i think winning silverware in any competition is hugely rewarding. i think getting to the stage is something that i now expect spurs do because of the stadium, the way they are, how they have moved on, what the manager has done— they have got better in every single way. i think getting to the semifinal should be a given for spurs. plenty more to come, we will be assessing this ajax team, a team rejuvenated with a rich history in this competition. very happy with the way we have played and how the world is talking about ajax now.

thanks john — we'll start in sheffield where some sensational snooker has been played today in the quarterfinals of the world championship — let's get the latest from the crucibe with hazel irvine. the headline maker from the headline makerfrom everyone's point of view asjudge tom, a man looking like a champion waiting today. yes, very impressive. lay down a markerfrom today. yes, very impressive. lay down a marker from the rest of the field and carried it on this afternoon. the first five frames of his match was very impressive. three centuries along the way, 7—1 is the scoreline there. meanwhile, the grandstand match, it isjohn higgins versus neil robertson, started very brightly but has become curiously pedestrian in some respects. yes, all of a sudden, the speed seem to have slowed down. there speed seem to have slowed down. there was a frame that led to the pattern of the

match changing. neil robertson was my excellence at the start was halted to some degree. from the perspective ofjohn higgins, he will be pleased as god in that way because that's the way he can go back to in this match. in other quarterfinals, dave gilbert, against kyren wilson. another headline maker is gary wilson, the world number 32 but won the five frames in a row to lead his session against ali carter. this guy is a real find, isn't he? he's not going away, he is going to ta ke he's not going away, he is going to take some stopping. it all continues live on bbc two at seven o'clock. team gb speed skater, elise christie, has opened up about her struggle with mental health in the hope that it will encourage other athletes to talk more openly about the subject. in an instagram post earlier this month, christie revealed that she suffered with depression and anxiety for two years, but is now feeling like herself again. she spoke to our reporter, david mcdaid. she's an athlete we've

seen experience the joy of becoming world champion, as well as the despair of olympic heartbreak. through it all, what has been unseen — until this social media post — has been her struggle with anxiety and depression. the reason behind the post and the motivation for it that day was the fact that there's a lot of other athletes going through this, there's a lot of normal humans, day—to—day people, going through the same thing, and i wanted to show that firstly, it's ok to feel like that and it's fine to be on the medication, but also that there were points that i felt that i was never going to get off them or i was never gonna feel better and here i am, you know? i feel like myself. the 28—year—old says anxiety, which began after receiving death threats at the 2014 winter games, began to steadily deteriorate. the depression kind of like became quite debilitating and i was in bed a lot, i was struggling to keep up with any, like, normal life. i hit a really massive low

after i got injured, olympic season, and there was stuff going on behind the scenes and ijust ended up broken, i guess. commentator: away they go, and christie goes down before they reach the very first corner! elise says anti—depression medication helped her get through to last year's winter olympics, but the disappointment of coming home empty—handed, as well as the breakup of her relationship, took her to her lowest ebb. in my lowest moments, i was self—harming — but not, not badly, but i was still doing it because i did not know how to cope without it, i did not know how to get rid of the feelings i was having without doing it, and i would never have shared that and i would not have wanted anyone to know that, and that is the point, is you can get to these points and you can get right out of it, because i have. from those lows, elise is now well again, and she hopes that by sharing her story she can inspire strength in others too. david mcdaid, bbc news, nottingham. and if you've been affected

by any of the issues in that report, there are a number of organisations and websites that can offer