It's the Deep State establishment as a whole and their aligned interests: the CIA, Mossad, FBI, MI-6, NSA, etc. But as formidable as these forces are when they work together this tightly, there's still opposition from the likes of China, Russia, Iran, and other Axis powers.
Israel isn't as "all powerful" as you think, especially at the grassroots level. It has trouble protecting its own public image and cannot offer a moral defense of its recent actions in Gaza. What gives Israel the most power in terms of control is the full backing of the West.