The upcoming exercise will be three times the size of last year's closely watched drills and perhaps bigger than the Soviet Union's largest training event.
The U.S. envoy to NATO says the United States will talk to Russia this week about its lack of transparency during major military exercises last month in Belarus.
The U.S. Army’s commander in Europe says Russia broke up its Zapad war games with Belarus into parts to avoid having international monitors watch the weeklong exercises last month.
The drills come a week after Russia and Belarus wrapped up their massive, weeklong war games that caused jitters in some NATO countries, including Poland and the Baltics.
Thousands of Polish and other NATO troops have launched major defensive exercises in Poland’s north amid security concerns raised by war games recently held by neighboring Russia and Belarus.