Ukraine unrest: Russian outrage at fatal Sloviansk shooting
20 April 2014 Last updated at 20:36 BST
Russia has expressed outrage after at least three people were killed at a pro-Russian checkpoint in eastern Ukraine.
Moscow has blamed Ukrainian nationalists for the attack near the city of Sloviansk.
The city's pro-Russian mayor has asked President Putin to send in peacekeeping troops.
Daniel Sandford reports from the scene.