Israel is our satrap and the knife we use to hold Egypt, Jordan, Syria, Lebanon, Iraq, and Iran in check.

We're protecting them because they're our made men. They launder our money, extort our allies, smuggle our weapons, and do a fair bit of our covert assassination and sabotage. That's when they aren't straight up doing terrorist bombings on our behalf.

Why would we not want to defend a nation fully on our payroll for all the most miserable and horrific rolls of an empire?