Ukraine soldier on patrol in the Donetsk region
14 July 2014 Last updated at 13:12 BST
Ukrainian forces have set up checkpoints on a line between territories controlled by the Ukrainian authorities and that controlled by pro-Russian separatists.
Vitaly is a Ukrainian soldier on patrol in the Donetsk region.
He tells the BBC about his duties, and what he feels about events in Ukraine.
Video produced by BBC Russian's Oleg Boldyrev