As U.S. President Donald Trump's deadline for Iran to open the Strait of Hormuz — a key oil route cut off by the ongoing U.S.-Israeli war on Iran — approached in early April 2026, a claim circulated online that Trump threatened the Islamic Republic via a post on his Truth Social account.

Tuesday night may well be “one of the most important moments in the long and complex history of the World,” the president wrote on Truth Social.

CNN commentator Scott Jennings endorsed President Donald Trump's threat to annihilate Iranian civilization on Tuesday, stating that he was not going to "second-guess" the president.

Scholars have proposed a wide variety of explanations, including a volcanic eruption, earthquakes, climate change, the disruption of trade routes, and conflict with the Mycenaeans, a group from the Greek mainland. However, the civilization may have had a less-dramatic ending, experts told Live Science.

President Donald Trump warned that a “whole civilization will die tonight” as his deadline for Iran to agree to a deal that includes reopening the Strait of Hormuz.