I think that's perfectly plausible after Khamenai pulls out of Lebanon, Syria, Yemen, and Iraq.
Why would they pull out of any of those places while the US is supporting Sunni regimes and their local power plays? America (and to a lesser extent the UK) are interfering in deep seated religious and cultural struggles and doing so with a complete lack of historical and cultural awareness. We should have known that of course since the second Iraq war which threw Iraq into complete chaos because of nothing more than rampant stupidity on the part of the Republican neo-cons. If the west stop fecking around in the Middle East, they will find a balance and settle down. Until then, you can expect the same shit to keep repeating itself, with the blame always being put squarely on the US and other western countries.
It's annoying as hell, because the likes of Iran could be valuable western allies if we stopped this pro-Saudi bullshit. Iran could become a democratic state long before Saudi Arabia would ever dream of it.