Ukraine crisis: 'We recruit volunteer fighters from Russia'
23 June 2014 Last updated at 07:49 BST
Ukrainian government forces and pro-Russia militants who want to break away from Kiev have been fighting in eastern Ukraine for more than two months.
Scores have been killed, and thousands more are thought to have been displaced.
While some of the pro-Russian militants are Ukraine citizens, others are being recruited from Russia.
The BBC's Steve Rosenberg met a man who wished to be identified as ''Yuri'' in the Russian city of Rostov. He said he was recruiting Russian volunteer fighters via the internet.