this is bbc news. the headlines at 11:00: victims‘ families demand that two british members of an islamic state execution cell should answer in court for their actions. a warning from the eu's chief brexit negotiatior — a transition period isn't a foregone conclusion, because of continuing disagreements. the handshake of history — the sister of north korea's kim jong jong—un meets the south korean president at the stunning winter olympics opening ceremony. and on newsnight the government urges an investigation in to oxfam over alleged sexual misconduct in haiti. i'll ask the former chief executive what went wrong. good evening and welcome to bbc news. the families of the victims of two

british islamic state members captured in syria, have called for them to face justice in court. alexanda kotey and el shafee el sheikh were part of a team of four is members whose british accents earned them the nickname "the beatles." us officials say the group are accused of executing 27 hostages. our home affairs correspondent daniel sandford reports. they became the most infamous gang of foreign fighters in the self—styled islamic state. callous torturers and public executioners of hostages. jihadijohn, his real name, mohammed emwazi — now dead. aine davis — in prison in turkey. and the two men we now know were captured last months, alexanda kotey and el shafee elsheikh. the gang are suspected of beheading alan henning, a driver and aid workerfrom eccles, and david haines, a long time aid worker from perth. his daughter now contemplating what punishment his newly captured

suspected killers should face. they should die a long, slow, painful death and i think quite a lot of people will understand that, that they should be allowed to live. but, realistically, that's not going to happen, and you have to come to terms with that. the best thing for them is to be locked up and throw away the key. they should never be allowed back in society because they willjust recruit people and they will just do this again. and for the sake of her father, if they end up in court, she will go to watch. if it goes to trial, i'll certainly be there. i certainly want to look them in the eye and let them know that i am who i am and they have destroyed a big part of my life. and, hopefully, there will be some sort ofjustice. some of the gangs hostages were freed, including former french reporter nicolas henin. he wants them to have the fairest trial possible. i would not be happy if they were just sent

to guantanamo bay because this is denial ofjustice. el shafee elsheikh arrived in syria from britain in 2012. alexanda kotey left the uk on an aid convoy to gaza in 2009 and also ended up in syria. their gang is accused by the us of beheading at least 27 hostages, including alan henning, david haines and americans james foley, peter kassig and steven sotloff. they're also suspected of waterboarding, mock executions, crucifixions and electric shock torture. alexanda kotey and el shafee elsheikh grew up close to each other in quite a small area of west london, near to the a40 flyover. it became infamous as an is recruiting ground.

as well as mohammed emwazi, jihadijohn, some half a dozen other men from these streets died fighting for is in either syria or iraq. elsheikh and kotey had already had their british citizenship removed by the home secretary, now a trial, possibly in the united states, seems the most likely outcome. daniel sandford, bbc news, west london. meanwhile, the scale of suffering in syria has reached unprecedented levels according to the united nations. yesterday, the un security council failed to uphold an appeal from aid officials for a month—long ceasefire. (ani) the war in syria has been raging for 7 years —— and in that time...the un say over half of the population have been forced from their home. neighbouring countries have restricted the passage of people fleeing syria — leaving thousands stranded on borders in terrible and the un says more than 13 million people require humanitarian assistance. earlier i spoke to panos moumzis,

the un's regional humanitarian coordinator for syria. during the last two months we have seen a dramatic deterioration. about 2.9 million people inside syria who are in hard to reach and besieged areas. in eastern ghouta, there are about 400,000 people, a suburb of damascus. during the last two months, we have not been able to ta ke months, we have not been able to take a single convoy inside eastern ghouta. due to the military bombardment, there are a number of casualties. about 700 people, women, children, elderly, in urgent need of medical evacuation. this is 30 minutes drive to the damascus hospitals. 22 people have died in the meantime. we are seeing extreme situations. also in idlib, close to the turkish border, where 300,000

people became displaced in the last six weeks. we see a deterioration and that is why we are calling for humanitarian ceasefire, for at least a month, where we will be able to bring humanitarian assistance to all the areas in need, in particular areas which are besieged and hard to reach. the basic rules of war is that you must respect civilians where they are. schools have been closed, markets have been attacked. there was an incident where a raids took place in the market. those who are injured, yet to be attacked and later inside the hospital, this is outrageous and unacceptable. the eu's chief brexit negotiatior, michel barnier, has issued a stark warning to the uk — effectively telling the british government, you can't have your cake and eat it. he said the uk's decision to leave

the eu single market and customs union meant border checks at the irish border were "unavoidable" — something both the uk and the eu have said would be unacceptable.he also warned that without greater agreement on key issues like northern ireland, the two year transition period after brexit was not a given. the brexit secretary david davis said he was surprised by mr barnier‘s remarks. brexit is coming and time is running short. just 13 months before britain is officially out of the european union, and today the eu had a sharp warning — sort out key sticking points, or there will be no deal and no transition. britain's brexit secretary met the eu chief negotiator in downing street on monday. friendly enough, but there's just weeks to thrash out the shape of a brexit transition. today, in brussels, with a big eu summit next month, michel barnier had a blunt message, in terms easy to understand. if these disagreements persist, the transition is not a given. so much to sort out, and talks are getting prickly. 0n the rights of migrants who arrive after brexit day, will brussels block trade if britain breaks eu rules? the brexit secretary

called that discourteous. oh, no, it isn't, said mr barnier. "my attitude hasn't been in the least discourteous "or vindictive", he said. "we never wished to punish the uk. "it's foreign to my state of mind". and how to leave the eu without bringing back a hard north/south irish border. no one wants that but... it is important to tell the truth. a uk decision to leave the single market and to leave the customs union would make border checks unavoidable. it's notjust a political problem at this shoe shop in newry, northern ireland. these shoes are meant for walking, on both sides of the border. customs and tariffs could mean a business like this running into trouble. what we need is easy access from the factory to our shop floor. if there is a hard border, then there will be hold—ups all the way along that we cannot predict.

the government wants to keep allies on side. brexiteers who say stand up to brussels, and unionists who say britain and northern ireland must leave the customs union as one. the bottom line is this, that northern ireland will leave the european union with the rest of the united kingdom. we would not countenance a situation where there would either be political constitutional barriers within the united kingdom, and economic barriers within the united kingdom internal market would be catastrophic for northern ireland. we're not prepared to accept that we become rule—takers from the eu when we have no say over it. that would be the worst of all worlds. yes, business wants certainty and to know they have time to get ready for things like customs changes. that is what the implementation period is about. it is not about having the eu try and dictate to us in a way that would be unacceptable to us and to businesses as well. tonight, the brexit secretary is saying he is surprised mr barnier

is not clear that britain just wants to go on trading as now during a transition. the government is hoping for compromise in negotiations, but if there is no transition deal next month, ministers will have to prepare britain and british business for the real possibility of a cliff—edge brexit. every month, every week, every day a new problem. if there's a transition deal, then comes deciding ambitions for brexit, which split mps and ministers. the next date with potential crisis always closer and closer. john pienaar, bbc news, westminster. an elaborate opening ceremony for the winter olympics in south korea has marked a political first. a handshake between the south korean president and the sister of the north korean leader, kim jong un. she is there as part of the most senior north korean delegation ever to visit the south. laura bicker reports from pyeongchang. the vibrant beat of the jangu drum took the audience

on a fairytale adventure. a celebration of south korea's past, and its hopes for the future. but there was a yearning, too, as the ceremony highlighted this country's quest for peace. korea! these athletes have been divided by a war that never truly ended. they carry the flag of a unified korea, and in one stadium, for one night, decades of rising tension and suspicion ebbed away. in the vip box, a moment most thought they'd never see, a member of the kim dynasty, the sister of the north korean leader, shaking hands with the south korean president. the arrival of kim yo—jong has surprised this tiny town, just miles from the militarised border. translation: it's nice to have the high level delegates from the north and it also feels

strange and wondrous. translation: of course i welcome them but i don't know why the south korean government is bending over backwards to appease them. i don't like to see the south serving the north. translation: my heart is melting. the south and north have been divided and now it feels peace is coming to us. but america is beginning to wonder whose side south korea is on. the only moment the us vice president looked comfortable was as he welcomed his team. he refused to acknowledge the north korean guests behind him. it's a note of caution many in the diplomatic community share. there's a real sense of pragmatism. nobody‘s over optimistic because we've seen too many false starts before. but of course, we all hope that this will turn out for the good and the pyeongchang olympics will be membered as the peace olympics. the political drama has loomed over these mountains but soon attention will turn to the sport and the medal hopes of thousands.

and we welcome great britain. team gb is aiming for its most successful winter games with a medal target of five or more, a challenge in this frigid climate. but some didn't seem to mind the cold. as many in the crowd bundled up in their heated seats, they gave a warm welcome to the bare—chested flag bearer from tonga. and so to the moment of truth. as ice—skating gold medallist yuna kim lights the flame, south korea has challenges ahead, including fears that it's falling victim to a fake charm offensive from the north. this is a public relations coup for north korea, to have its athletes appear on this global stage. it gives what's been an isolated regime a human face. but critics also fear it will allow them to portray this image of a normal, peace—loving nuclear power. as with all shows, this one

must come to an end. the olympic flame will only burn in pyeongchang for two weeks. it will take more than warm sporting gestures to lead to permanent change now it's time for newsnight with emily maitlis. the programme does contains and stress distressing images. he was a 68 your man using an oxfam villa in a country that had just been through a country that had just been through a devastating earthquake. what bit of that was normal or acceptable. that's what we said at the time. tonight... the government exists has no tolerance. why did oxfam take no disciplinary

action about members of staff found guilty of sexual exploitation in haiti. how rife is it within the charity and the sector at large? as the prime minister orders a full and urgent investigation, we'll ask what went wrong. also tonight... as syria's war rumbles on, newsnight receives fresh footage that suggests the assad regime has returned to chemical warfare. it looks like significant chemical weapons attack, without shadow of a doubt. and this could well be sarin? it could well be. and... raising the black flag. america's bad boy meets newsnight‘s bad boy. henry rollins meetsjohn sweeney. we're as terrified as you are. do you fancy an arm wrestle? good evening.