President Donald Trump said late Saturday that he would halt new planned attacks on Iran pending renewed talks to wind down the war and revive stalled cargo traffic through the Strait of Hormuz.

It was the latest in a pattern of announcements the U.S. president has made to first threaten massive strikes and then later call them off. The abrupt shifts have been a defining feature of the five-month conflict that has sent prices of oil and basic goods soaring — and the announcements to date have been upended by renewed attacks days or even hours afterward.

Here is a look at some of Trump’s past major announcements about pausing strikes against Iran:

April 7

The United States and Iran agree to a two-week ceasefire to end the intense fighting that began on Feb. 28 with Israeli and U.S. attacks. Trump makes the announcement less than two hours before a deadline he had set for Tehran to capitulate or face attacks on bridges and power plants — strikes he said would mean “a whole civilization will die.”