But it's not.
They could simply not attack anyone.
Or if they so choose, they can strike against the US and Israel for attacking them.
Their supplies aren't limitless. Eventually they'll start running lower on ammunitions as well as the platforms to launch them from. Then things aren't going to bode well for them when America and Israel continue attacking while the rest of the world looks the other way.
They're in a tight spot, but giving Trump and Netanyahu the ability to say "I told you so" as well as having the blood of innocent uninvolved people on their hands is not the optimal path to get through this.