US President Obama gives EU talks news briefing
26 March 2014 Last updated at 12:57 GMT
US President Barack Obama is in Brussels for talks with leaders of the European Union and Nato to discuss Ukraine and other transatlantic issues.
In a major speech, he is due to stress the importance of European security to the US, and warn Russia against threatening international stability.
President Obama will give a joint news briefing with European Council President Herman Van Rompuy and European Commission President Jose Manuel Barroso.