Obama cautious over Ukraine truce
20 February 2014 Last updated at 07:27 GMT
President Obama has sounded a note of caution about the truce agreed between Ukraine's president Viktor Yanukovych and opposition leaders.
He said that ultimately Ukraine should move toward a unity government and free and fair elections.
A truce was declared after two days of deadly clashes between riot police and anti-government protestors in the capital Kiev.
Tim Allman reports.