You said:
"To reunify Germany we gave guarantee's we would not support the Eastern expansion of NATO. If we had continued to do that, there is no war today."
Moscow solidified its hold on Crimea in April, outlawing the Tatar legislature that had opposed Russia’s annexation of the region since 2014.
www.latimes.com
Soviet leader Mikhail Gorbachev was given a host of assurances that the NATO alliance would not expand past what was then the East German border in 1990 according to new declassified documents. Russian leaders often complain that the NATO extended an invitation to Hungary, Poland and what was...
nationalinterest.org
I agree that assurances were given by Jim Baker to Gorbachev "not one inch east of the east German border.
Reunification of Germany is NOT the agreement I'm discussing. Your claim that Putin's fear of NATO expansion caused the Ukraine war has some truth, the Budapest Memorandum is more recent than Baker's assurance to the old Soviet Union. Putin agreed NOT to invade Ukraine. What happened was the "Maidan Revolt" and Ukraine's independence from Russia. Is Ukraine an independent country or a satellite of Russia? If it is independent it can ask to join NATO, there is no treaty stopping NATO expansion, as Sweden and Finland proved.