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.
You’re not wrong. It’s something experts are worried about. For example:
https://thebulletin.org/2022/08/npt-review-conference-will-it-rise-to-the-proliferation-challenges/