In 40 AD Caligula led an army near to mutiny in a failed attempt to conquer Britain. The campaign ended by Caligula having his army line up on the shore, stab their swords into the ocean, and collect sea shells as trophies of their "victory over Neptune."
There's a difference between a vassal and an ally. That being said, give an example of what more you think the Europeans could do in Israel's "best interests".