The US was weak from Iraq under Bush.
The US was in love with Russia during Obama’s first term, and Obama agreed to cancel missile defense for help with his reelection.
Obama ignored Russia during his second term when the took Crimea.
Trump sold arms to Ukraine and sanctioned Russia.
Biden stoped arms to Ukraine and cancelled sanctions on Russia.
Biden surrendered Afghanistan, makinf the US look weak.
Russia was emboldened to invade Ukraine.
Now here we are, fighting to the last Ukrainian.