Do you really think Russia is failing, and even if it is, if USA launches a boots on the ground operation Iran, the resources would definitely shift from Ukraine to Iran where USA is directly engaged, and when this significant aid is stopped, Russia will definitely get an upper hand.

I mean man he may act dumb but that does not mean he necesarrily is one. The real point is, wheather the toddler is ready to pay the price of Invading Iran, which will be all of its competing major powers landing in a better position.