This is a pretty empty threat. Realistically speaking the US cannot escalate without facing huge domestic backlash. Public support for US involvement in a new war in a is nonexistent, given the abject an expensive failures of the recent afghan and iraqi wars.
Add the fact that any iranian involvement would go through hezbollah, gives both the us government and iran a way to plausibly deny iranian involvement. The US will do nothing. They might send some troop to “support” israel. They already have. Which is a token gesture at best.
The country is facing countless problems. Corruption, lack of infrastructure, deep poverty. And what do these fuckers focus on? Stopping buttsex. >.<