In Ukraine, government troops are continuing fight gun battles with anti-government protesters around the eastern cities.
In Slavyansk, Kiev launched a fresh wave of "anti-terror" operations earlier Monday to retake the city. The Interior Ministry said at least four Ukrainian servicemen were killed and some 30 wounded during the operation.
Meanwhile, Kiev has claimed its security forces are in control of most of Kramatorsk city, excluding the city center.
The cities of Mariupol and Kostiantynivka were also the targeted by Ukraine. These four cities are in the state of Donetsk, which is the heartland of support for former President Viktor Yanukovych, and the stronghold of the anti-government protesters.