The apothegm easily applies to Europe’s leaders, too. Despite being blindsided by the Israeli-American operation in Iran, they have largely declared support for it — if somewhat cagily — and lent military assistance in the form of bases, warships and planes. More structurally, Europeans have foundered in letting themselves be so dependent on the whims of an America commanded by a rogue president. Almost by default, they have colluded in the conditions of their own endangerment.