Is This Formerly a Proxy War?

There's a proxy war when you have two major powers, right? So Germany and Japan and the democracies with some help from the Soviet Union communist in the Spanish Civil War. But each side supplies arms and maybe even advisors and stealthily some pilots or something in a war between two separate powers. The other proxy war is that one of the major powers is actually fighting. And as Putin says, this is the only time in history that a nuclear power has been fighting a huge conventional war on its border against the proxy proxy efforts of NATO or its enemies.