Myth:
NATO promised Russia it would not expand after the Cold War
FACT
Such an agreement was never made. NATO’s
door has been open to new members since it was founded in 1949. This has never changed. No treaty signed by NATO Allies and Russia included provisions on NATO membership. Decisions on NATO membership are taken by consensus among all Allies. Russia does not have a veto.
The idea of NATO enlargement beyond a united Germany was not on the agenda in 1989, particularly as the Warsaw Pact still existed until 1991. Mikhail Gorbachev said in
an interview in 2014: "The topic of 'NATO expansion' was not discussed at all, and it wasn't brought up in those years. I say this with full responsibility. Not a single Eastern European country raised the issue, not even after the Warsaw Pact ceased to exist in 1991. Western leaders didn't bring it up either."
Individual Allies cannot make agreements on NATO’s behalf.
President Clinton consistently refused Boris Yeltsin's offer to commit that no former Soviet Republics would join NATO: "I can't make commitments on behalf of NATO, and I'm not going to be in the position myself of vetoing NATO expansion with respect to any country, much less letting you or anyone else do so… NATO operates by consensus," he said.
The wording “NATO expansion” is already part of the myth. NATO did not hunt for new members or want to “expand eastward.” NATO respects every nation’s right to choose its own path. NATO membership is a decision for NATO Allies and those countries who wish to join alone.