The maximalist aims of the joint attack cast doubt on whether there had ever been any prospect of success for the US-Iranian negotiations in the preceding weeks, in which delegates discussed possible limits on uranium enrichment. Those talks, the latest round on Thursday, had been conducted under the shadow of what Trump called his “beautiful armada” gathering in the Middle East, the biggest US force in the region since the ill-fated 2003 Iraq invasion, and it now seems likely that only a complete capitulation on Iran’s part could stop this assembled American might being unleashed.