The NATO allies served notice Tuesday that they will formally suspend their participation in a 1990 treaty limiting conventional forces in Europe, according to a NATO statement.

NATO condemns Russia's decision to withdraw from the Treaty on Conventional Armed Forces in Europe (CFE) and "intend to suspend the operation of the CFE Treaty for as long as necessary," the statement said.

Earlier on Tuesday, Russia formally withdrew from the landmark security treaty, which limited key categories of conventional armed forces, blaming the United States for undermining post-Cold War security by enlarging the NATO military alliance.

(With input from Reuters)

(Cover: The national flags of NATO member countries outside the organization's headquarters in Brussels, Belgium, April 3, 2023. /CFP)