I am only signing this so I can express an opposite point of view.
Russia had gone to war previously because Georgia and Chechnya were prompted by our CIA to join NATO. The US provoked this war knowing the expected reaction. Go to Youtube and read other viewpoints: Mearsheimer, Stephen Cohen, etc. We are headed to WW#3 if we keep it up. The BS about Russia invading more countries: I mean, they are having trouble with Ukraine. Look up the Gulf of Tonkin, weapons of mass destruction in Iraq, US threats to start a nuclear war when Khrushchev wanted to put missiles in nearby Cuba, Wilson overlooking Britain's blockade of Germany (which led to WW2), FDR enacting seven steps designed to insure Japan attacked the US. Russians lived in the Donbass for 100's of years and needed the Crimea for its navy. All Ukraine needs to do is cede these areas and promise to NOT join NATO, which is a gang of nations against Russia.