"...Russia and Iran wont do shit..."
Agreed.
Russia cannot project that kind of Conventional Military Muscle very far beyond their borders any longer. They're trying to fix that but it's going to take another 10-20 years or more, I expect.
"...and China never attacks anyone unless in their backyard..."
True.
The Chinese are even worse-prepared to project Conventional Military Muscle into the Med and Middle East than are the Russians.
Plus, the Chinese economy and our own are far too tightly intertwoven for the Chinese to do something crazy like that, except in the more dire and mortal of circumstances, and this little circus-flea of an intervention ain't it.
"...and If Russia or Iran do they will get smoked by the U.S. Airforce and Navy..."
Insofar as the Iranians are concerned, all we need to do is to turn the Israelis loose on 'em, to make 'em pee their pants and keep 'em off our backs. If it gets this far, Muslim world opinion will be soooo badly skewed against us that getting the Israelis involved would no longer be much of a political concern, and, if not, we shift a few of our own assets to cover the approaches from Iran, and shoot 'em up ourselves, as they cross the border.
As far as either the Russian Air Force or the Russian Navy is concerned, they know better than to mess with us - and NATO in general - in the Med... which is, basically, a NATO lake... or in any of the states surrounding the Med.
They don't have that kind of muscle and they'd be too far from their bases. And, you're right - we're better than they are, in the Air, and on the Water; better or comparable gear, better training, better motivation, better-supplied, better paid, better (and more) experience.
None of that is a rock-solid guarantee that we'd kick their ass, but it's an overwhelming set of factors that would cause Smart Vegas Money to back the US and The West in any such brawl.
And the Russians are smart enough and pragmatic enough to know that, and to take such limitations into account in their own political calculations, despite the bluster.
"...It will never be a ground war against Russia or Iran."
Agreed.
The Russians won't punch through Turkey, and neither the Russians nor the Iranians can send large-scale ground-forces convoys through Iraq without a repeat of the Highway of Death scenario, this time, featuring Russian or Iranian convoy gear and bodies.
And, lacking control of the Air, neither Russia nor Iran would be able to airlift enough ground troops and gear into position in order to be decisive, before we and NATO started shooting them out of the air the minute they crossed beyond their own airspace.
The Russians won't go nuclear over this pissant sideshow.
Consequently, it's a good bet that we don't have to worry overly much about a military response from Russia, China or Iran.
IMHO.