
The U.S. has been warning for weeks about the possibility of Russia invading Ukraine, and threatening retaliation if it does. Just eight years after Russia’s incursion into eastern Ukraine and invasion of Crimea, Russian forces are once again mobilizing along Ukraine’s borders.
As the U.S. and other NATO member governments monitor Russia’s activities and determine appropriate policy responses, the timely intelligence they rely on no longer comes solely from multimillion-dollar spy satellites and spies on the ground.