I support the Russian invasion of the Ukraine because I believe that the behavior of my own country is contrary to basic American values and has created a Neo-Nazi nation in the Ukraine.
From the very start, we should not have aided the violent overthrow of the democratically-elected government in the Ukraine in 2014. If we support democracy as a form of government, which is a basic American value, there is no room for contrary behavior where there was no actual threat or military conflict with us and a democratically-elected government.
Further, we should not have supported nor continue to support Neo-Nazis. We have directly and indirectly supplied weapons to the Azov battalion and other Neo-Nazi military groups in the Ukraine. We have turned a blind eye to public parades in the Ukraine which have included hundreds of actual former Nazis from World War II who wore their Nazi uniforms during those parades. Our support of the Ukrainian government effectively supports a major political party in the Ukraine, the "Right Sector," which espouses Neo-Nazi ideology.
Our U.S. support for this Neo-Nazi nation has resulted in several thousands of deaths and mass burials of ethnic Russian citizens of the Ukraine. Early on, the ethnic Russians in the breakaway republics effectively defended themselves against two major offenses by the Neo-Nazis and surrounded them. That resulted in the Minsk agreements brokered by Russia, France and Germany and allowed the Neo-Nazis to live. Since then--eight years since then--the Minsk agreements have never been fulfilled, and France and Germany have never done anything about it, and yet they now complain about Russia's actions instead of taking responsibility for their own inaction.
Instead of supporting the Minsk agreements, the U.S. has repeatedly pumped weapons into the hands of the Neo-Nazis and effectively supported the continued sporadic shelling and murders of ethnic Russians. Very recently, the $200 million dollars of military equipment that the U.S. supplied to the Ukraine again resulted in the shelling of ethnic Russian civilians. Russia finally acted to protect ethnic Russian civilians in the only way it could.
If my own country can't find and live up to its American values, I honor Russia for doing what needs to be done. I honor Russia for living up to my values as an American.