The US State Department has warned relations with Russia would be affected if it granted asylum to US intelligence leaker Edward Snowden.
But the spokesman added: "However we are not at that point yet. They still have the opportunity to do the right thing and return Mr Snowden to the United States and that's what our hope is."
More top news
Police have revealed a pair of sandals they have had made similar to the pair Ben is thought to have been wearing when he disappeared
The hospital was last attacked just three days ago, something that UN Secretary General Ban Ki Moon denounced as a war crime.
Former UKIP leader Nigel Farage has flown to the US to help coach presidential candidate Donald Trump ahead of his next debate.