ITV News Diplomatic Correspondent John Ray is following a press conference with US Vice President Joe Biden, who has been holding talks with Ukrainian leaders in Kiev.
Ukraine: Biden in Kiev tells embattled govt 'you will not walk this road alone.'
Biden in Ukraine: we will never recognise Russian occupation of Crimea. Ukraine must remain one nation
Biden visit comes as stitching in geneva peace deal shows signs of coming apart
Tensions remain high in eastern Ukraine after at least three died in a day of shooting during what was supposed to be an Easter truce.
In an exclusive interview with NBC News, the Ukrainian Prime Minister warns of the dangers of unchecked Russian expansion and aggression.
Russia, the US and the EU say that all sides have agreed to steps to "de-escalate" the crisis in Ukraine at talks in Geneva.