You repeatedly argue that America is morally obligated to defend Ukraine because it’s a sovereign territory that has been invaded by the Russian military. For the sake of argument let’s assume American aid helps the Ukraine military drive Russia out. Suppose the Ukrainian military does not stop at the border but instead pursues its enemy into Russia itself. Would you consider that to be a Ukrainian invasion into Russia’s sovereign territory? Would America then be morally obligated to switch sides and come to Russia’s defense?