Putin started the war - Pass (though it can be debated if in fact Russia is a "major power", they have been described as only a regional power by influential persons).
Putin is involved in the war he started - Fail.
Putin started the war and is involved, not really fitting the dictionary definition of a proxy war, but t's usual for pro Kremlin supporters to invent things like their own "facts" and "realities" and especially their own definitions for words.