David Cameron has said that Britain 'does not accept the partition of Ukraine'.
We are not accepting the partition of Ukraine. We should respect Ukraine's territorial integrity. That is why we have taken the sanctions. That is why we have piled on the pressure, and that is why you have seen such unity here today in Nato.
The announcement about the ceasefire is good news. I think we need to look carefully about whether it also includes a commitment, as I understand it might, to make real progress on a proper peace plan.
Angus Raffle, 8, says his surprise meeting with the President at Stonehenge was "awesome". His mother says she "squealed like a teenager".
The language has been ramped up at this Nato summit, yet caution appears the order of the day after the mistakes of recent history.
The US President's motorcade pulled up at the school with his black stretch limousine bearing a Welsh flag for the first time in history.