Vessels are seen during the war games Zapad-2013 (West-2013) at the Khmelevka range on Russia's Baltic Sea in the Kaliningrad Region, September 26, 2013. (Photo by Alexei Druzhinin/Reuters/RIA Novosti/Kremlin)





Soviet SU-100 tank destroyers drive during the Victory Day parade at Red Square in Moscow, May 9, 2015. Picture taken with a tilt and shift lens. (Photo by Reuters/RIA Novosti)





Crew members pose for a picture during a ceremony launching the diesel-electric submarine "Rostov-on-Don" at the Admiralty Shipyards in St. Petersburg, June 26, 2014. (Photo by Alexander Demianchuk/Reuters)





Servicemen take part in the joint war games Zapad-2013 at the Khmelevka range on Russia's Baltic Sea in the Kaliningrad Region, September 26, 2013. (Photo by Alexei Druzhinin/Reuters/RIA Novosti/Kremlin)





A Russian T-80 tank is driven at a firing ground during a demonstration show in Zhukovsky outside Moscow, June 30, 2012. (Photo by Maxim Shemetov/Reuters)





Russian army soldiers in winter camouflage go through training exercises at an altitude of 3,500 meters on the slopes of Mount Elbrus in Russia's Caucasus January 18, 2013. (Photo by Kazbek Basayev/Reuters)





A Russian serviceman walks past the Buk-1M missile system at the Army-2015 international military forum in Kubinka, outside Moscow, June 16, 2015. (Photo by Maxim Shemetov/Reuters)





Russian servicemen remove felled trees, which were cut down to prevent new fire outbursts, outside the town of Lukhovitsy, some 110 km (68 miles) southeast of the capital Moscow, August 6, 2010. (Photo by Denis Sinyakov/Reuters)





A Russian TOS-1 Buratino multiple rocket launcher fires during the Russia Arms Expo 2013 9th international exhibition of arms, military equipment and ammunition, in the Urals city of Nizhny Tagil, September 25, 2013. (Photo by Sergei Karpukhin/Reuters)





Soldiers run near a line of the Mikoyan MiG-31B supersonic interceptor aircrafts at the Kansk-Dalniy military airdrome outside the town of Kansk, 130 miles east of Russia's Siberian city of Krasnoyarsk, February 22, 2013. (Photo by Ilya Naymushin/Reuters)





Russia's Prime Minister Vladimir Putin listens to Air Forces' Commander-in-Chief Alexander Zelenin as they watch planes performing during the opening of the MAKS-2009 international air show in Zhukovsky outside Moscow, August 18, 2009. (Photo by Sergei Karpukhin/Reuters)





Tanks drive past an explosion as they take part in military exercises in Russia's Zabaykalsky region, July 17, 2013. (Photo by Aleksey Nikolskyi/Reuters/RIA Novosti/Kremlin)





A Russian Sukhoi Su-25 jet fighter flies during a drill at the Nitka training complex in the village of Novofedorovka, west of the Crimean city of Simferopol, August 27, 2015. (Photo by Pavel Rebrov/Reuters)





Members of the Russian team transport tanks on a pontoon bridge during the Open Water competition for pontoon bridge units as part of the International Army Games-2015 in the town of Murom, Russia, August 8, 2015. (Photo by Maxim Zmeyev/Reuters)





An Ilyushin Il-78 Midas air force tanker and a Tupolev Tu-95MS strategic bomber fly over the Red Square during the Victory Day parade in Moscow, May 9, 2015. (Photo by Reuters/RIA Novosti/Host Photo Agency)





Russian sailors march during a naval parade rehearsal in the Crimean port of Sevastopol, July 25, 2014. (Photo by Reuters/Stringer)





Russian soldiers from 34th motorized infantry mountain brigade, 58th Army, prepare to evacuate a fellow soldier acting as an injured person during a drill at the Darial range outside Russia's city of Vladikavkaz, July 28, 2010. (Photo by Kazbek Basayev/Reuters)





Russian navy sailors line up during celebrations for Navy Day in the Black Sea port of Sevastopol, Crimea, July 26, 2015. (Photo by Pavel Rebrov/Reuters)





Russian amphibious vehicles drive in formation during celebrations to mark Navy Day in the far eastern Russian port of Vladivostok, July 27, 2014. (Photo by Yuri Maltsev/Reuters)





A military vessel is seen during the joint war games Zapad-2013 at the Khmelevka range on Russia's Baltic Sea in the Kaliningrad Region, September 26, 2013. (Photo by Alexei Druzhinin/Reuters/RIA Novosti/Kremlin)





A Russian soldier crushes a pile of bricks with a hammer on the stomach of a fellow soldier during a performance as part of a naval parade rehearsal at the harbor of Russia's far eastern city of Vladivostok, July 23, 2010. (Photo by Yuri Maltsev/Reuters)





Students from the Yermolov Cadet School test their helmets before a parachute jump outside the southern Russian city of Stavropol, May 17, 2012. (Photo by Eduard Korniyenko/Reuters)





A Russian soldier lies with his back to Ukrainian fighter jets as he watches Ukrainian serviceman at the Belbek airport in the Crimea region, March 4, 2014. (Photo by Baz Ratner/Reuters)





A couple kiss in front of a Russian military ship during the International Maritime Defence Show in St. Petersburg, June 24, 2009. (Photo by Alexander Demianchuk/Reuters)





Sukhoi Su-27 jet fighters release flares as they perform during the Russia Arms Expo 2013 9th international exhibition of arms, military equipment and ammunition, in the Urals city of Nizhny Tagil, September 25, 2013. (Photo by Sergei Karpukhin/Reuters)





Russian sailors board their Russian Navy frigate Smolny as they leave the STX Les Chantiers de l'Atlantique shipyard site in Saint-Nazaire, western France, December 18, 2014. (Photo by Stephane Mahe/Reuters)





Russian servicemen take part in an exercise to test a new mobile cable lift on a military training ground, south of Vladikavkaz, in the Republic of North Ossetia November 23, 2012. (Photo by Kazbek Basayev/Reuters)





Students from the Yermolov Cadet School lodge at a training base, the terminal point of their training march, near the southern Russian city of Stavropol March 29, 2012. (Photo by Eduard Korniyenko/Reuters)





The crew of a Russian Kilo-class diesel submarine line up on its deck during a naval parade rehearsal at the harbor of Russia's far eastern city of Vladivostok, July 23, 2010. (Photo by Yuri Maltsev/Reuters)





A dog runs past Russian navy sailors taking part in a festive ceremony marking the first anniversary of the Crimean treaty signing in Sevastopol, March 18, 2015. (Photo by Maxim Shemetov/Reuters)





A Russian armored personnel carrier during a rehearsal for the Victory Day parade on Red Square in Moscow, April 26, 2011. (Photo by Sergei Karpukhin/Reuters)





A Russian serviceman aboard a tank salutes during the Victory Day parade in Moscow's Red Square, May 9, 2014. (Photo by Grigory Dukor/Reuters)





Russian warships fire during a naval parade rehearsal in the Crimean port of Sevastopol, July 25, 2014. (Photo by Reuters/Stringer)