Comment by 4gotunameagain

National Security Archive at George Washington University:

Declassified documents show security assurances against NATO expansion to Soviet leaders from Baker, Bush, Genscher, Kohl, Gates, Mitterrand, Thatcher, Hurd, Major, and Woerner

You're welcome.

https://nsarchive.gwu.edu/briefing-book/russia-programs/2017...

All of your comments are suspiciously related to US foreign policy issues btw ;)