More than 20 North Atlantic Treaty Organization, or NATO member states, began a large military training exercise Tuesday. The exercise is part of efforts by the alliance to show interest in central and eastern European countries. Many of those countries are concerned about Russia’s actions in Ukraine. The Russian government condemned the NATO operation early Tuesday. Russian officials said the exercises do not help to build a feeling of trust and security in Europe. Tensions between Russia and the West are higher than they have been since the end of the Soviet Union. Though Russia opposes NATO expansion into the former soviet states, NATO Secretary-General Jens Stoltenberg has said that “the Cold War is history, and we want it to stay that way.” Poland is leading the 10-day long exercises, which NATO officials are calling Anakonda-16. They will involve 31,000 troops, 3,000 vehicles, 105 aircraft and 12 Navy ships.