Since Russian President Vladimir Putin ordered the invasion of Ukraine in 2022, NATO has focused on trying to deter an attack on its own territory and avoid all-out war with nuclear armed Russia. Now the time has come for NATO to defend itself, and European allies might have to do it alone, experts and leaders say.
As it has attacked Ukraine, Russia has incessantly harassed Kyiv’s European backers. Warplanes and ships have breached NATO airspace and waters. Transport and communications networks have been sabotaged. Putin opponents poisoned in Europe. Disinformation campaigns have sought to undermine support and weaken unity.
