AKIPRESS.COM - Russia will next month hold its biggest war games since the fall of the Soviet Union, Defence Minister Sergei Shoigu said on Tuesday, a massive military exercise that will also involve the Chinese and Mongolian armies, The Telegraph reports.

The exercise, called Vostok-2018 (East-2018), will take place in central and eastern Russian military districts and involve almost 300,000 troops, more than 1,000 military aircraft, two of Russia's naval fleets, and all of its airborne units, Shoigu said in a statement.

The manoeuvres will take place at a time of heightened tension between the West and Russia, which is concerned about what it says is an unjustified build-up of the NATO military alliance on its western flank.

NATO says it has beefed up its forces in eastern Europe to deter potential Russian military action after Moscow annexed Ukraine's Crimea in 2014 and backed a pro-Russian uprising in eastern Ukraine.

The war games, which will take place from Sept. 11-15, are likely to worry Japan, which has already complained about a Russian military build-up in the Far East, something Moscow has linked to Tokyo's roll-out of the Aegis U.S. missile system.

Japanese Prime Minister Shinzo Abe is due to attend a forum in the Russian city of Vladivostok over the same period, and a Japanese Foreign Ministry official said on Tuesday that Tokyo always paid attention to shifts in Russian-Chinese military cooperation.

Asked if the cost of holding such a massive military exercise was justified at a time when Russia is faced with higher social spending demands, Kremlin spokesman Dmitry Peskov said such war games were essential.