The U.S. Ambassador to the Soviet Union at the time it broke up and many other experts have said that the West promised Gorbachev that – if the USSR allowed German re-unification – NATO wouldn't move "one inch closer" to Russia.

While Western leaders have long denied the promise, newly-declassified documents now prove this.

The National Security Archive at George Washington University reported Tuesday:

U.S. Secretary of State James Baker's famous "not one inch eastward" assurance about NATO expansion in his meeting with Soviet leader Mikhail Gorbachev on February 9, 1990, was part of a cascade of assurances about Soviet security given by Western leaders to Gorbachev and other Soviet officials throughout the process of German unification in 1990 and on into 1991, according to declassified U.S., Soviet, German, British and French documents posted today by the National Security Archive at George Washington University (http://nsarchive.gwu.edu).

The documents show that multiple national leaders were considering and rejecting Central and Eastern European membership in NATO as of early 1990 and through 1991, that discussions of NATO in the context of German unification negotiations in 1990 were not at all narrowly limited to the status of East German territory, and that subsequentSoviet and Russian complaints about being misled about NATO expansion were founded in written contemporaneous memcons and telcons at the highest levels.