A destroyed T-72 tank, which presumably came from Russia, is seen on a battlefield near separatist-controlled Starobesheve, eastern Ukraine, October 2, 2014. The burnt-out remains of dozens of tanks and armoured vehicles in fields near the small village of Horbatenko bear witness to the ferocity of a battle that turned the tide of the conflict in eastern Ukraine. Among the debris, Reuters found the blackened carcasses of what military experts have since identified as two Russian army tanks, supporting statements by Kiev and the West that the rebels were backed by troops and equipment sent by Moscow. Moscow denies the accusations though the rebels had been on the brink of defeat until late August, when the Ukrainian government says they received an injection of soldiers and weapons from Russia. (Photo by Maria Tsvetkova/Reuters)

Cartridges of artillery shells are seen at the trenches near Starobesheve, controlled by pro-Russian separatists, in eastern Ukraine October 2, 2014. (Photo by Maria Tsvetkova/Reuters)

The label “Army of Russia” marks a used package of meal found on a battlefield near Starobesheve, controlled by pro-Russian separatists, in eastern Ukraine October 1, 2014. (Photo by Maria Tsvetkova/Reuters)

A destroyed armored personnel carrier BMP-2, which presumably came from Russia, is pictured on a road near Starobesheve, controlled by separatists, in eastern Ukraine October 2, 2014. (Photo by Maria Tsvetkova/Reuters)

Marking is seen on a tube of a Kornet anti-tank guided missile, presumably delivered from Russia, on a battlefield near separatist-controlled Starobesheve in eastern Ukraine, October 2, 2014. (Photo by Maria Tsvetkova/Reuters)

Used boxes of packed meals for the Russian army reinforce a blindage near Starobesheve, controlled by pro-Russian separatists, in eastern Ukraine October 2, 2014. (Photo by Maria Tsvetkova/Reuters)

A destroyed T-72 tank, which presumably came from Russia, is seen on a battlefield near separatist-controlled Starobesheve in eastern Ukraine October 2, 2014. (Photo by Maria Tsvetkova/Reuters)

A painted white circle marks the turret of a BMP-2 armored personnel carrier, which presumably came from Russia, on a battlefield near Starobesheve, controlled by pro-Russian separatists, in eastern Ukraine October 2, 2014. (Photo by Maria Tsvetkova/Reuters)

A tube of a Kornet anti-tank guided missile, presumably delivered from Russia, is seen on a battlefield near separatist-controlled Starobesheve in eastern Ukraine October 2, 2014. (Photo by Maria Tsvetkova/Reuters)

Two destroyed T-72 tanks, which presumably came from Russia, are seen on a battlefield near separatist-controlled Starobesheve in eastern Ukraine October 2, 2014. (Photo by Maria Tsvetkova/Reuters)

A destroyed T-72 tank, which presumably came from Russia, is seen on a battlefield near a trench outside separatist-controlled Starobesheve in eastern Ukraine October 2, 2014. (Photo by Maria Tsvetkova/Reuters)