NATO has launched massive war-games in Poland, weeks ahead of a security summit in Warsaw.

The Anaconda-16 is the biggest-ever military exercise by the Western military alliance in Poland since the end of the Polish People’s Republic in 1989. More than 31000 soldiers from 19 states as well as five NATO partner countries including Macedonia, Georgia and Ukraine will participate in the drills.

It will also involve over 100 aircraft, 12 naval vessels and some three-thousand armored vehicles.

The war-games will last 10 days at major bases across Poland. Drills also are being staged by NATO forces in the Baltic States.

The military alliance has recently unveiled plans to significantly increase its forces in Eastern Europe. Moscow says any presence of NATO troops close to its borders is a threat to its security.