President Donald Trump convened a Situation Room meeting to discuss expanding military action against Iran, with the agenda centered on two familiar pressure points: Tehran’s nuclear program and control over the Strait of Hormuz.

What happened and why it matters

The Situation Room discussion follows a turbulent sequence of events that has played out over several months. Back on May 29, Trump held a two-hour Situation Room meeting aimed at finalizing a memorandum of understanding that would have extended a ceasefire and addressed navigation concerns in the Strait of Hormuz, a chokepoint through which roughly a fifth of global oil supply passes daily.

That memorandum of understanding collapsed by mid-June, with…