America has a worse problem only in that America is still (Lord knows how) viewed as the default global superpower - so things going wrong in far-away places are somehow our problem.

So America can walk away from this. Vs. Israel can't.

Worse - if Israel's popularity with American voters continues to fall, America could place its support for Israel on the bargaining table with Iran. Think about just how much Tehran might give up, to end that support. And about just how poor Israel's situation might soon become without it.

If Israel still has any competent leaders, they should be terrified by the possibility.

Israel's diplomacy has taken a huge hit. They have all time low approval/support from the majority of the world, including America

Except for the problems caused by attacking Iran earlier this year, the US does not have a problem with Iran so big it warrants trying to recruit one million soldiers and deploy them to Iran to subjugate the nation. And even the current problems aren't big enough to warrant that effort (yet, at least).