A fragile ceasefire between Iran and Israel appeared to hold Tuesday after initially faltering, while U.S. President Donald Trump used an expletive outside the White House to describe his frustration with both nations.

U.S. President Donald Trump told reporters at the White House that in his view, both sides had violated the nascent agreement, using an expletive to hammer home his point.

Trump said the ceasefire would bring an “Official END” to the war, a major change in the hostilities that follows a U.S. strike over the weekend on three Iranian nuclear sites.