Canadian Politics Today

For context:

To understand Russia’s claims of betrayal, it is necessary to review the reassurances then US secretary of state James A. Baker made to former Soviet leader Mikhail Gorbachev during a meeting on February 9, 1990. In a discussion on the status of a reunited Germany, the two men agreed that NATO would not extend past the territory of East Germany, a promise repeated by NATO’s secretary general in a speech on May 17 that same year in Brussels.
https://www.france24.com/en/russia/20220130-did-nato-betray-russia-by-expanding-to-the-east

Also, Obama's secretary of defence predicted in 2014 that Nato expansion would result in a war in Ukraine because Russia would see it as an existential threat.  But nobody listened.