WASHINGTON – With his Israel-Iran ceasefire fraying, President Donald Trump boarded Air Force One for a NATO summit in Europe where the Mideast conflict was likely to dominate.

The summit, Trump's first since returning to the White House, was meant to be a victory lap.

Laggard American allies were finally giving him the increase in defense spending he'd long wanted. "Donald, you have driven us to a really, really important moment for America and Europe, and the world," NATO Secretary-General Mark Rutte texted him. "You will achieve something NO American president in decades could get done."

But a restless Trump was in no mood to celebrate: his mind was on a crisis he thought he'd solved, only to see his handcrafted ceasefire begin to unravel as Israel accused Iran of a violation and started up new airstrikes early on June 24.

More: Where is Iran's enriched uranium? Questions loom after Trump claims victory.