hello. you're watching bbc world news. i'm james menendez. our top story this hour: president trump says he could impose taxes of up to 20% on imports from mexico to pay for his border wall. but mexico's government warns that a tax will only make products from avocados to appliances more expensive for americans. britain's prime minister will meet mr trump later on friday, to press the case for even closer political and economic ties. welcome to the programme. our other main stories this hour: celebrations in the gambia for the first peaceful transfer of power in the country's modern history. commemorations will be held across europe on friday to mark international holocaust remembrance day. i'm aaron heslehurst. in business: talking up transatlantic trade. but these days — is the ‘special relationship‘ simply more special

to britain than it is to the us? and when is a $5.3 billion profit in three months just not enough? we'll tell you why investors are not happy with google and also find out if its parent company alphabet‘s other bets will pay off? hello. there's been sharp reaction from mexico to the suggestion that the us may impose a 20% tax on imports to pay for president trump's planned border wall. the mexican foreign minister luis videgaray said such a tax would only make a whole range of goods more expensive for american consumers and they would end up paying for the wall. nick bryant reports on a deepening row. donald trump's new executive toy. his first ride today on air force one, that potent symbol of us presidential power. but it was the cancelled travel plans of the mexican president that

were at the centre of a diplomatic storm. his plane will stay grounded after a summit between the two leaders scheduled for washington next week was abruptly called off. this mexican stand—off is over the great totem of the trump presidency, the wall he's determined, notjust to build along the border, but also to get mexico to pay for. but in an angry speech last night, the country's president, enrique pena nieto, said he wouldn't foot the bill. so, shortly before leaving the oval office this morning, donald trump decided to conduct his diplomacy by tweet. "if mexico is unwilling to pay for the badly needed wall, then it would be better to cancel the upcoming meeting." by the time he spoke in philadelphia, the mexicans had announced the summit was off, and that earned a public scolding from president trump. the president of mexico and myself have agreed to cancel our planned meeting scheduled for next week.

unless mexico is going to treat the united states fairly, with respect, such a meeting would be fruitless, and i want to go a different route. almost a week into his term in office, it's already becoming clear that donald trump is changing the presidency more than the presidency is changing him. the presidency is travelling at a hurtling pace. donald trump is clearly revelling in his seat of power, whether it's in the oval office or at 30,000 feet. beautiful. great plane. britain's prime minister theresa may will become the first foreign leader to hold talks with donald trump at the white house later today. she's hoping — among other things — to lay the groundwork for a post—brexit trade deal with the us. the bbc‘s political editor laura kuenssberg is travelling with mrs may. opposites attract.

theresa may's hope. but how close does she want to get to him? the prime minister made a quieter arrival, making her way down the windy steps in philadelphia. her convoy speeding towards her debut in trump land, here to make friends. no hate, no fear. a reminder right outside the 5—star hotel where they were both to speak, donald trump has many enemies as well. the prime minister's warm up act was the president himself. is he ready for her? i'm meeting with the prime minister tomorrow, as you know. great britain. i'm meeting with her tomorrow. i don't have my commerce secretary, they want to talk trade, so i'll have to handle it myself. laughter which is ok. then it was her turn, with, as you would expect, fulsome reference to the friendship across the atlantic. it has been america's destiny to bear the leadership of the free

world and to carry that heavy responsibility on its shoulders, but my country, the united kingdom of great britain and northern ireland, has been proud to share that burden and to walk alongside you at every stage. applause cheering but this is much more than a meet and greet. theresa may came with a serious message for republicans and the world. under her leadership, no more western conflicts like iraq, or afghanistan, she suggested. this cannot mean a return to the failed policies of the past. the days of britain and america intervening in sovereign countries in an attempt to remake the world in our own image are over, but nor can we afford to stand idly by, when the threat is real and when it is in our own interests to intervene.

we must be strong, smart and hard—headed, and we must demonstrate the resolve necessary to stand up for our interests. and a warning perhaps directed at the president over an assertive russia. when it comes to russia, as so often it is wise to turn to the example of president reagan, who, during his negotiations with his opposite number mikhail gorbachev, used to abide by the adage — trust, but verify. with... applause with president putin, my advice is to engage, but beware. noticeable as well, her praise for the republicans and president trump's controversial win. because of what you have done together, because of that great victory you have won, america can be stronger, greater and more confident in the years ahead. even before she touched down though, theresa may had a taste of how much

political trouble closeness to president trump could cause. number ten believes the risk is worth it, because there's a big opportunity as well, but this new friendship could cause fireworks every time donald trump speaks his mind. like suggesting torture, banned under british and international law, works. i want to do everything within the bounds of what you're allowed to do legally, but do i feel it works? absolutely i feel it works. the prime minister was adamant britain won't change its laws and signalled we might stop sharing intelligence with america if torture was brought back. here among the republican top brass, the idea is unlikely to fly. the deep—seated policy in american culture is not to torture. so theresa may is right and president trump is wrong? i didn't say that. just one of many awkward subjects the pm and president could discuss tomorrow, a test, even in politics true friends tell the truth to one

another, not merely platitudes, or what they want to hear. president trump has given a wide—ranging interview with the fox news opinion host sean hannity. among the issues covered was trade and his decision not tojoin the free trade deal known as the trans pacific partnership. he was asked if he now wanted to push ahead with bilateral trade agreements. if the deal doesn't work out, we terminate the deal. when you get into the mosh pit, i call it, we have all these countries together, you can't get out of the deal. and you take the lowest denominator. in other words, you have countries that don't treat us well. they are in there. we want to deal with the ones that treat us well. and if they don't treat us well, we terminate or we give them a 30—day notice of termination. and then they come back and they want to renegotiate during that 30 days and we get a better deal. we don't make good deals anymore. you almost wonder

who does these deals. how did it happen? sojust...look, to sum up, we're going to make great trade deals. we're going to bring backjobs. we're going to have a strong military. we're going to do great. and aaron is here with all the business news. more now on our top story. we need to continue to the same theme, it is the gift, it could be eight years, hello. we start in the us where, as you have been hearing, uk prime minister theresa may will become the first world leader to meet president trump when they hold talks later today. mrs may has called on the president to renew the ‘special relationship‘ between the two countries. she is keen to show britain can prosper outside the european union, so lining up a post—brexit trade deal is high on her agenda. but is it really a priority for the us? let‘s show you some of the numbers involved. in terms of individual countries, the united states is the uk‘s top export destination.

britain sold goods and services worth $125 billion to the us in 2015. that‘s i7% of all its exports. ta ken together though, the european union is by far britain‘s top export market — worth $280 billion, 44% of britain‘s total exports. any drop in those exports as a result of brexit could see britain relying far more on the us. but have a look at this. britain is far less important to the us than the us is to britain. america sold $65 billion of goods and services here in 2015, half the amount that went the other way. and to put that in the context of the vast us economy, that is little more than 4% of total us exports. and less than half a percent of us gdp. so putting aside the warm words— will this really be a priority

for the white house? lots more on this in 20 minutes also, how about this? we ask a question about when $5.3 billion of profit in months are just not enough. it seems, when you google. the parent company saw its shares fall enough hours trading after their results disappointed investors. there is a concern about the slowdown in growth of online advertising. again, we have a special report on that one coming up in15 special report on that one coming up in 15 minutes. you can find me on twitter and we will see you shortly. the new president of the gambia, adama barrow, has flown back into the country. mr barrow was inaugurated last week in senegal for his own safety while regional leaders persuaded his predecessor, yahya jammeh, to step down. he is now in exile in equatorial guinea. here‘s alistair leithead.

a long—awaited return for the gambia‘s new president. it is the first time power here has peacefully passed from one leader to another. adama barrow was inaugurated in senegal, when the man he defeated at the ballot box refused to leave. expectations are high. the former dictator yahya jammeh, went into exile last weekend after weeks of pressure from neighbouring presidents. a rare case of african leaders strongly policing democracy. the threat of military action from a regionalforce helped. they now provide security for the new president, still unsure where his army‘s loyalty lies. now he will need fancy footwork to deliver on all the political promises.

it is a poor country. young talent often leaves. this is the gambia‘s top women‘s team. their goalkeeper drowned last year trying to cross the mediterranean. she was 20 years old. her brother thinks she may have hoped to play in europe and so joined a well—trodden path. thousands of people go. why? what we believe is that we want to be out and do something for ourfamily or something like that. who knows, to be honest? in villages all across the gambia, many, many people are taking what they call here the back way to europe. starting here they cross through senegal, through mali, through burkina faso to niger, where they head north through the sahara desert to libya and from there they try to cross the mediterranean into europe. fancy new houses built in poor

villages show what reaching europe means. money sent home makes a huge difference here. it is a big incentive. this man is 26. he tried and failed. the family supported his plan to migrate and were disappointed when he came home after a terrible experience. it was so hard. kidnapped by criminals, he was imprisoned for one month and then stranded with no money in southern libya he asked the un help him get home. there is hope here that a new president can revive the economy and remove the need for young people to leave. but it will not happen overnight. stay with us here on bbc news. still to come it is nearly the lunar new

year and while tens of millions of chinese are heading home to their families we need one young woman who is head the other way, to work full the shuttle challenger exploded soon after liftoff. there were seven astronauts on board, one of them a woman school teacher. all of them are believed to have been killed. by the evening, tahrir square, the heart of official cairo, was in the hands of the demonstrators. they were using the word "revolution". the earthquake singled out buildings, and brought them down in seconds. tonight, the search for any survivors has an increasing desperation about it as the hours pass. the new government is firmly in control of the entire republic of uganda. moscow got its first taste of western fast food as mcdonald‘s opened their biggest restaurant in pushkin square. but the hundreds of muscovites who queued up today won‘t find it cheap,

with a big mac costing half the day‘s wages for the average russian. this is bbc world news. i‘m james menendez. the latest headlines: the white house has said president trump may tax imports from mexico to pay for his border wall. the mexican government has warned that will hurt american consumers. it‘s holocaust memorial day, marking the anniversary of the liberation of auschwitz at the end of the second world war. commemorations are being held there to remember the six millionjews and others that were murdered by the nazis. our special correspondent allan little has been to auschwitz and met one woman who survived her time there against the odds. 72 years ago this week, soviet troops entered auschwitz. this was not the only extermination camp in nazi—occupied europe. but it was where the evidence was best preserved of the crime that

came to be known as the holocaust. on this railway platform, nazi officers separated those chosen to live and work from those sent immediately to die. these pictures showed jews transported here from hungary in 19114. susan pollock, 13 years old, was chosen to live. her mother was sent to the gas. there was no hugs, there was no kisses, there was no embrace. the dehumanisation started immediately. i didn‘t cry. it was just as if i had lost all my feelings. and, um, that was auschwitz. this was not a german crime alone. these railway lines extended to almost every corner of europe, and to the active collaboration

of norwegian civil servants, french police, polish train drivers, ukrainian paramilitaries. when it was over, a great public silence descended on europe. after the war, the nations of europe were so preoccupied by their own victimhood that they did not pay much attention to the uniqueness of what had happened here. the jews who survived found that the world beyond these perimeter fences didn‘t much want to hear their stories. it was only really in the 1960s, nearly 20 years after the liberation of auschwitz, that popular consciousness began to confron what europe collectively had done to itsjews. but international law changed immediately. at the post—war nuremberg trials, two new crimes entered the judicial lexicon for the first time, crimes against humanity and genocide. before 1945, if a state wished

to kill half its population, there was no rule of international law that said you could not do that. now, the change that occurred in 1945, as we know very sadly, has not prevented horrors from taking place, but it does mean that when horrors occur, there is now at least an objective standard which says to governments, to individual states, that as a matter of international law you cannot do what you are doing. it took half a century for those powers to be used. but dozens have been convicted and jailed by international courts for genocide and crimes against humanity in bosnia, rwanda and elsewhere. even so, holocaust denial persists. the internet is full of claims that the destruction of the jews never happened. but the testimony of survivors is a warning to posterity, to us here today. we‘re not talking about barbarians, we‘re not talking about primitive society. the germans were advanced,

educated, progressive amongst the european nations. maybe the civilisation is just a veneer. i think we all need to be very careful about any hate propaganda, because it has got the potential to erupt, and then it is too late to stop it. let‘s return to our top story — the row between mexico and the united states over trade and immigration. one man who is not happy with donald trump‘s plans to build a border wall — or at least his desire for mexico to pay for it — is the country‘s former president, vicente fox. earlier he spoke to my colleague, mike embley, who asked him how he thought this dispute would be resolved. well, it will go as far as mrtrump wants. if he keeps pressing mexico,

if he keeps discriminating mexico, against other countries that have larger deficits than mexico, we will go as far as needed. our president has declared now that if needed we would withdraw from nafta, and leave the united states alone, losing 10 million usjobs that mexico provides for them, through our imports. so they have everything to lose and nothing to win. i hope united states citizens wake up. i hope congress of united states open their eyes, and see that this guy is taking the united states economy to the drain. you have been a president yourself, of course. what do you say to president trump‘s

law and order point, that undocumented immigrants are involved in various elements of criminality, and he has a responsibility to do something about that? i accect that part of undocumented immigration, just like you have in britain, from africa, where else? that has to be agreed. mexico is working hard to solve that. by the way, now, people leaving mexico to the united states is one third of what it used to be. so mexico is solving the problem. now, about criminality, that is a lie. it is stupid. he has never proven that mexico is particularly criminals. i see much more death tolls, many more crimes committed, by us citizens, because they can have a gun at any time they want, and it is not mexicans. now, if any mexican commits a crime in the united states, he should be caught, put injail, and sentenced to a long term in prison. that, we accept.

that is not a problem. but now he is saying that he will give a ticket and send them back to their country of origin. that is wrong, that is notjustice. he should catch him, put him injail, take him to court and come up with a penalty for him. that is accepted. if he wants to build a wall, let him do. if he wants to throw us $25 billion to the basket, instead of using those $25 billion to invest in schools, invest in infrastructure, let him do. we‘re not saying don‘t build a wall. we are saying we are not paying for a wall that you have decided, stupidly, to build, and that is none of our business. it is the biggest holiday getaway in the world — the chinese new year, when millions of people are on the move in order to spend time with theirfamilies,

often travelling thousands of kilometres to do so. but there are some families who choose not to go home. we‘ve been to meet one. you can get in touch with me on twitter. coming up injust a couple of minutes, aaron has all the latest business news in world business report. first look at the weather where you are. hello. well, while some of us were shivering on thursday, for others, for example across the north of scotland, it was remarkably mild. a day of contrasts. we are kind of getting back to normal through this weekend. most of us will turn less cold. i think the temperatures will be lifting quite quickly. rain not too far away from the province. scotland, a frosty start. across the

border into england, freezing fog. further south, the odd shower across eastern counties. the risk of a bit of ice but for most it will be dry stop temperatures climbing above freezing. milder across the south—west. shower is not far away from cornwall and the threat increases throughout the day. having said all that, north and east will stay dry albeit cold despite sunshine temperatures struggling to get much above freezing, for example two degrees in newcastle. night degrees in plymouth. as we had through the night, sporadic rain.

snow for a time in the high ground of scotland. a touch of frost in northern ireland. for most, saturday morning will be frost free. the rain will clear. it should not hang around. for many it will brighten up there will be some sharp showers. for most of us, temperatures higher than they have been. across the south, the milder then can then use on two sunday. there could be rain in southern areas. watch this space. this is bbc world news, the headlines: a proposal from the white house to fund president trump‘s planned border wall with a 20% tax on imports has been criticised by mexico‘s government. it warned the tax would only make products more expensive for americans. the british prime minister, will become the first foreign leader

to meet president trump later on friday. she‘s expected to open discussions on a possible free trade deal to be agreed after the uk leaves the european union. the gambia‘s new president, adama barrow has returned home to scenes ofjubilation. this was the first peaceful tra nsfer of ofjubilation. this was the first peaceful transfer of power in the modern history of the country. his predators had to be pressured to step down by neighbouring countries. -- his step down by neighbouring countries. —— his predecessors had to be pressured. hundreds of millions of people across east asia are preparing to celebrate lunar new year.