Visitors watch Buk missile system and long range surface-to-air missile system S300 during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, , June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

A man poses for a photo with AK assault riffle in his hands during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

Twin-engine supermaneuverable jet fighters Su-27 of Russkie Vityazi ("Russian Knights") aerobatic team flies during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

The flame of man-portable rocket launcher and flamethrower RPO-A "Shmel" is seen during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

Twin-engine supermaneuverable jet fighter aircrafts MiG-29 of Strizhi ("Swifts" in Russian) aerobatic team flies during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

A soldier drives Russia's army quadracycle during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

Twin-engine supermaneuverable jet fighters Su-27 of Russkie Vityazi ("Russian Knights") aerobatic team flies during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

A helicopter drops Russia's airbone troopers during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

A woman poses for a photo during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

Visitors explore Russia's army howitzer during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

Special heat machine TMS-65U acts during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

Russia's airborne troopers join the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)

A Russian main battle tank T-90A shoots during the International Military-Technical Forum "ARMY 2015" near Kubinka in the Moscow Region, Russia, June 19, 2015. The forum was held from June 16 to 19. (Xinhua/Pavel Bednyakov)