Having influence over something doesn't mean that you control it. The US has exerted heavy influence to attempt to curb the worst of the Israeli impulses (full scale ground operations being one of the successful ones). But that does not mean that the US controls Israel.
Israel is hell bent on repeating every mistake that the US made post 9/11. The latest is the equivalent of the "mission accomplished" banner.
The next mistake(if they make it) is going to be expanding the scope of what they intend to do.