That is absolutely load of horse manure.
We promised the Russians no eastward expansion of NATO and expanded to their border.
Ukraine promised to be neutral toward Russia in its Constitution in 1996 and then allowed us, the CIA and NATO to foment an illegal coup and install a government hostile to both Moscow and the ethnic and cultural Russian population in the annexed areas.
We and NATO proceeded to fund, arm and train a 600,000 man Ukrainian army on Russia's border.
If Russia or China had done anything like that in Mexico, WE, JUSTIFIABLY, WOULD HAVE INVADED.
We made no such promise. Even Gorbachev confirmed, directly, that question wasn’t even brought up.
James Baker was confined to the topic of German reunification while the Soviet Union and Warsaw Pact existed.
The proposal was, if Eastern Germany reunified with West Germany, NATO wouldn’t move into east Germany.
That’s all.
And, Gorbachev and Scheherazade both decided not to include that in the final agreement.
Within two years the entire question was rendered moot by the Belovezha Accords. Which granted every nation formerly in the Warsaw Pact or USSR the freedom to choose EEC over CIS, or NATO over CSTO. Poland and the Baltics chose EU and NATO, Belarus didn’t, and Ukraine sat on the fence entirely until Putin and Medvedev tried using blackmail and political assassination to bully Ukraine into their camp.
Stop repeating Russian revisionist fiction.
Ukraine did not join NATO and remains neutral, the Maidan uprising was a popular response to Russian interference blocking the EU economic agreement, the governments that followed were freely elected by the Ukrainian people, and Ukraine built up its army to counter Russia’s military invasion in 2014. There is no justification for Russia’s invasion.