Vostok-2018, set to become the largest military exercises held by Russian Federation in over 35 years, are being held on September 11-17 at five ranges in the east of Russian Federation, and in the waters of the Sea of Japan, Bering Sea and the Sea of Okhotsk.
The exercises of Thursday were simulated on the training ground Tsougol located near the borders of china and mongolia, the defense against a land attack, and air, involving for this single day, almost 25,000 soldiers, 7,000 vehicles and 250 aircraft and helicopters, according to the Russian army.
At the end of the exercises, Putin awarded medals to 10 servicemen of Russia, China and Mongolia, who distinguished themselves during the course.
"Our duty toward Russian Federation, our motherland, is to be ready to stand up for its sovereignty, security and national interests, and support our allies if required", Mr Putin said.
The main stage of the Vostok-2018 strategic drills was held at the Tsugol firing range in the Trans-Baikal Region.
Russian Defence Minister Sergei Shoigu said: "These are the largest drills of the Armed Forces, which acquired the status of worldwide drills, since the Zapad 1981 exercises".
The head of the military department also noted that Vostok 2018 maneuvers are the largest event of the Russian Armed Forces combat training. "We do not and can not have any aggressive plans".
The exercises, which are taking place in Siberia, Russia's far east and on its Pacific coast, involve 36,000 tanks and come amid hard relations between the west and Russia, and souring ties between China and the US.
"Our foreign policy is aimed at constructive cooperation with all countries that are interested in it", he added.