According to the 2014 US-NATO declaration of confrontation with Russia, all member countries are supposed to commit 2 percent of their GDP to military expenditure. But as with most NATO plans and endeavours, this one has failed to meet expectations.
Following dissolution of the Warsaw Pact in 1991 there ceased to be any reason for existence of the North Atlantic Treaty Organisation. The Pact had been formed in 1955 in response to inclusion of a rearmed West Germany in the US-NATO military alliance whose main objective was to: «settle any international dispute in which they may be involved by peaceful means… and to refrain in their international relations from the threat or use of force in any manner inconsistent with the purposes of the United Nations».
All disputes between the US-European alliance and the Soviet Union had indeed been settled by peaceful means. There had been a diplomatically-facilitated, non-violent end to the Cold War, and 1992 was the ideal time for NATO members to begin to withdraw their offensively-tasked troops, missiles and aircraft from the hundreds of bases surrounding the borders of the former Soviet Union. Politically, socially, militarily – and especially economically – the disbandment of NATO made sense. It was a clumsy grouping that, for all the propaganda, was almost entirely dependent on the US for offensive capability.