Things change. I don’t suppose I am particularly surprised. At some point Israel probably considered that one of the “power players” in the world would try and blackmail them to surrender their nukes. But that might only work if they had fission weapons. Everybody is intimidated by fusion weapons.
As you probably already know the “trigger” for an “H-Bomb” is an “A-Bomb” located inside. Two or three more “Tsar Bomba” size tests and we’d all probably be dead.