A Chinese helicopter hovers the field for drill as Chinese armored forces advance during the Peace Mission-2013 China-Russia joint military drill in Chelyabinsk, Russia, on August 9, 2013. The 20-day Peace Mission-2013 China-Russia joint military drill began in Chelyabinsk on July 27. (Xinhua/Xian Yunqiang)
Chinese armored forces advance during the Peace Mission-2013 China-Russia joint military drill in Chelyabinsk, Russia, on August 9, 2013. The 20-day Peace Mission-2013 China-Russia joint military drill began in Chelyabinsk on July 27. (Xinhua/Xian Yunqiang)
Chinese armored forces advance during the Peace Mission-2013 China-Russia joint military drill in Chelyabinsk, Russia, on August 9, 2013. The 20-day Peace Mission-2013 China-Russia joint military drill began in Chelyabinsk on July 27. (Xinhua/Wang Yushan)
Helicopters hover the field for drill during the Peace Mission-2013 China-Russia joint military drill in Chelyabinsk, Russia, on August 9, 2013. The 20-day Peace Mission-2013 China-Russia joint military drill began in Chelyabinsk on July 27. (Xinhua/Wang Yushan)
Chinese and Russian armored forces advance under cover during the Peace Mission-2013 China-Russia joint military drill in Chelyabinsk, Russia, on August 9, 2013. The 20-day Peace Mission-2013 China-Russia joint military drill began in Chelyabinsk on July 27. (Xinhua/Tan Changjun)