NATO and Russia hold war games amid negotiations to reverse the escalating crisis on Ukraine's borders

Läsna, northern Estonia — As the U.S. and its allies continue negotiating with Russia in a bid to prevent the standoff on Ukraine's borders escalating, they are also preparing for war, and the preparations are clearly aimed at deterring any Russian invasion. French President Emmanuel Macron met Ukraine's president on Tuesday after flying to Moscow for talks with President Vladimir Putin. 

Macron said the standoff with Russia could go on for "weeks and months."

Amid the flurry of diplomacy, NATO has bolstered its presence in countries around Ukraine, and the Western military alliance is holding war games hoping to deter a Russian attack.