Until 2014 Russia was largely cutting the number of troops on NATO's borders to move them elsewhere. The war with Ukraine changed that, reawakening Moscow to the possibility of a large-scale war on its western front.
Putin’s Attempted ‘Reset’: What Does It Say About His View of American Democracy?
Did Putin really think a U.S. president could single-handedly reverse U.S. policy on a major international issue with no regard for opposition from Congress, the media and the public? That certainly seems to be the case.