Defense ministers from across NATO have promised to provide more weapons to Ukraine. They say the Russian invasion has also prompted them to reconsider their "future posture."
The ministers wrapped up a two-day meeting at NATO headquarters in Brussels on Wednesday.
NATO Secretary General Jens Stoltenberg said Russia's aggression is a game changer and that NATO must maintain credible deterrence and strong defense.
US Secretary of Defense Lloyd Austin added that he is deeply proud of the progress they have made over the past several months and that the good work must continue.
The ministers want to strengthen their forces, particularly along their eastern flank in Estonia, Latvia, Lithuania, Poland and Romania.
However, they are divided over the number of troops to send, where to deploy them, and what weapons to provide. They will continue those discussions when they meet in Madrid from June 28 to 30.
Stoltenberg said NATO leaders expect that summit to be "transformative." They hope to lay out their strategy for the next 10 years. Austin said they also want to improve cooperation with partners in the Asia-Pacific, including Australia and Japan.