The current Russian war of aggression happened on Biden's watch, but US support for Ukrainian fascists has been a bipartisan project longer than Joe has been in DC:
Nationalism and fascism in Ukraine: A historical overview
"Many academics have covered up Western cooperation with Ukrainian fascists..."
"The media, too, largely kept quiet.
"In his 1988 book
Blowback: America‘s Recruitment of Nazis and Its Effects on the Cold War, American journalist Christopher Simpson, who uncovered the network of old Nazis in the service of the CIA, noted:
“Until recently, the US media usually could be counted on to maintain a discreet silence about émigré leaders with Nazi backgrounds accused of working for the CIA.
"According to declassified records obtained through the Freedom of Information Act, several
mass media organizations in this country—at times working in direct concert with the CIA—became instrumental in promoting Cold War myths transforming certain exiled Nazi collaborators of World War II into 'freedom fighters’ and heroes of the renewed struggle against communism.' [13]"
Russia-Ukraine war: A different invasion, the West's same 'madman' script