Russia feels heat of Ukraine conflict
16 July 2014 Last updated at 06:19 BST
Russia's Ministry of Defence has shown journalists what it says is the aftermath of a shell attack on its soil on Sunday, which killed one man.
Ukraine denies any involvement in the attack.
The dispute is part of the information war between the two countries, trying to blame each other for the fighting.
Daniel Sandford reports from the Russian side of the border.