Smoke from fire rises above the ground in Martakert province, after an unmanned military air vehicle was shot down by the self-defense army of Nagorno-Karabakh according to Armenian media, during clashes over the breakaway Nagorno-Karabakh region, April
Soldiers of the self-defense army of Nagorno-Karabakh gather at their positions in Martakert province, which according to Armenian media was affected by clashes over the breakaway Nagorno-Karabakh region, April 4, 2016.
The wreckage of an Azeri Mi-24 helicopter which was downed during clashes with Armenian forces in Nagorno-Karabakh region, which is controlled by separatist Armenians, is seen in this still image taken from video provided by the Nagorno-Karabakh region D
An Armenian soldier of the self-defense army of Nagorno-Karabakh stands near an artillery unit in the town of Martakert, where clashes with Azeri forces are taking place, in Nagorno-Karabakh region, which is controlled by separatist Armenians, April 3, 2
A soldier of the self-defense army of Nagorno-Karabakh carries weapons in Martakert province, which according to Armenian media was affected by clashes over the breakaway Nagorno-Karabakh region, April 4, 2016.
People surround a coffin with the body of an Armenian serviceman, who was killed in clashes over the breakaway Nagorno-Karabakh region according to Armenian officials, during a memorial service at a church in Yerevan, Armenia, April 4, 2016.
Armenian President Serzh Sargsyan (2nd L) visits a soldier, who was injured in clashes over the breakaway Nagorno-Karabakh region according to Armenian officials, at the Defence Ministry's central military hospital in Yerevan, Armenia, April 4, 2016.
Volunteers drive trucks in the direction towards the frontline to join the self-defense army of Nagorno-Karabakh on a road in the breakaway Nagorno-Karabakh region, April 4, 2016.
Gevorg Grigoryan, 12, who was wounded in a recent shelling during clashes between Armenian and Azeri forces in Nagorno-Karabakh region, which is controlled by separatist Armenians, receives treatment at a hospital in Nagorno Karabakh's main city of Stepa
An Armenian serviceman of the self-defense army of Nagorno-Karabakh launch artillery toward Azeri forces in the town of Martakert in Nagorno-Karabakh region, which is controlled by separatist Armenians, April 3, 2016.