On Saturday, March 21, 2026, Iranian ballistic missiles struck the southern Israeli cities of Dimona and Arad, marking a significant escalation in the ongoing conflict. Following these attacks, President Donald Trump issued a 48-hour ultimatum to Iran, threatening to "obliterate" its power plants if the Strait of Hormuz is not fully reopened to global oil trade.

 

President Trump’s ultimatum comes after Iranian missiles struck two cities in southern Israel, including one near the country’s main nuclear research center.

On Saturday, March 21, 2026, Iranian ballistic missiles struck the southern Israeli cities of Dimona and Arad, marking a significant escalation in the ongoing conflict. Following these attacks, President Donald Trump issued a 48-hour ultimatum to Iran, threatening to "obliterate" its power plants if the Strait of Hormuz is not fully reopened to global oil trade.

 

Missile Strikes in Southern Israel

The strikes hit two major communities in the Negev desert, resulting in approximately 100 injuries and extensive property damage.

Dimona: Home to the Negev Nuclear Research Center, Israel's primary nuclear facility. While the city was hit directly, the International Atomic Energy Agency (IAEA) reported no indication of damage to the reactor or abnormal radiation levels.

Arad: A state of emergency was declared after a direct hit damaged at least 10 apartment buildings, leaving several in danger of collapse.

Defense Failure: The Israeli military confirmed that its air defense systems failed to intercept the missiles, the first time Iranian projectiles have penetrated the defenses protecting the nuclear site.

 

The Trump Ultimatum

While spending the weekend at his home in Florida, President Trump issued the following via social media:

48-Hour Deadline: Iran has until roughly Monday, March 23, to reopen the Strait of Hormuz.

Energy Infrastructure Targets: If the waterway remains closed, Trump warned the U.S. would destroy "various POWER PLANTS, STARTING WITH THE BIGGEST ONE FIRST!".

Economic Context: The ultimatum comes as soaring oil prices and the total halt of tanker traffic through the strait have placed increasing pressure on the U.S. administration.

 

Retaliatory Escalation

Iran stated the attacks were a "response" to a strike earlier that day on its own Natanz nuclear enrichment site. In the early hours of Sunday, March 22, the Israeli military announced it had begun conducting retaliatory strikes in Tehran