While a US commitment that NATO would not expand towards Russia was made during talks with the Soviets in 1990, and remains a topic of heated dispute, no undertaking was written into the treaty on German reunification.
While a US commitment that NATO would not expand towards Russia was made during talks with the Soviets in 1990, and remains a topic of heated dispute, no undertaking was written into the treaty on German reunification.
Remind me: How many treaties has Russia broken at this point?