President Trump made it clear that the memorandum of understanding signed with Iran is a starting point, not a finish line. If Iran doesn’t hold up its end, the US is prepared to strike again.

The MOU, electronically signed on June 15 by US and Iranian representatives, establishes a 60-day ceasefire, commits to reopening the Strait of Hormuz, and sets the table for fresh nuclear negotiations. A formal signing ceremony is scheduled for June 19-20 in Geneva.

What the MOU actually covers

The three pillars of the agreement are straightforward in theory but enormously complex in practice. First, a 60-day ceasefire between the two nations. Second, the reopening of the Strait of Hormuz, a narrow waterway through which roughly a fifth of the world’s oil supply passes on any given day. Third, a return to nuclear negotiations.

Trump’s caveat was blunt. If the US disapproves of how Iran handles its commitments under the MOU, military strikes remain on the table.