Trucks in a Russian humanitarian aid convoy pictured parked in a field outside the town of Kamensk-Shakhtinsky in Rostov region, some 30 km from the Russian-Ukrainian border, Russia, on August 15, 2014 (AFP Photo/Dmitry Serebryakov)
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A Russian military truck transporting a self-propelled howitzer 2S19 - MSTA-S (M1990 "Farm" NATO classification) is seen near the town of Kamensk-Shakhtinsky in the Rostov region, Russia, some 30 km from the Ukrainian border, on August 15, 2014 (AFP Photo/Sergei Venyavsky)