State Department tells Americans worldwide to 'exercise increased caution'

The war entered its fourth week on Saturday.

Last Updated: March 22, 2026, 8:29 PM EDT

President Donald Trump announced "major combat operations" against Iran on Feb. 28, with massive joint U.S.-Israel strikes attack targeting military and government sites, officials said.

Ayatollah Ali Khamenei was among those killed in Tehran on the first day of strikes and his son Mojtaba Khamenei was chosen to succeed him. Iran is responding with missile and drone attacks targeting Israel, regional U.S. bases and multiple Gulf nations. Iran is also attempting to block some shipping traffic through the Strait of Hormuz.

Israel is also intensifying its long-running strike campaign against the Iran-backed Hezbollah militia in Lebanon.

Watch special coverage on Nightline, "War with Iran," each night on ABC and streaming on Disney+ and Hulu.

Mar 17, 2026, 8:46 PM EDT

US drops 5,000-pound 'bunker buster' bombs at targets around Strait of Hormuz

U.S. aircraft dropped "multiple 5,000-pound deep penetrator munitions" on hardened Iranian missile sites along Iran’s coastline by the Strait of Hormuz on Tuesday, U.S. Central Command announced.

The bombs are officially “bunker busters” designed to strike at reinforced targets and can also penetrate deep towards a target. Their use against hardened Iranian missile targets along the Strait of Hormuz is part of the ongoing effort to prevent Iran from striking at commercial shipping through the strait.

Many of the larger bombs the U.S. has been dropping are 2,000-pound bombs.

A bomb, known as the Massive Ordnance Penetrator, a 30,000-pound bomb specifically designed to strike at deep underground facilities, was used last June to strike at Iran’s underground nuclear facilities.

Mar 17, 2026, 7:26 PM EDT

2 dead in Israel following Iranian missile barrage, rescue service says

Two people in Israel are dead following an Iranian missile barrage, according to Magen David Adom, the Israeli emergency response organization.

A man and woman died from "serious shrapnel injuries" in Ramat Gan, near Tel Aviv, the organization said.

Search and rescue crews responded to several sites in central Israel following reports of impacts from Iranian launches, the Israel Defense Forces said.

PHOTO: Israel US Iran
Missiles launched from Iran streak across the sky over central Israel, early Wednesday, March 18, 2026.
Ohad Zwigenberg/AP
Mar 17, 2026, 5:17 PM EDT

Iran confirms death of security chief Ali Larijani

Iran's Supreme National Security Council has confirmed that senior official Ali Larijani is dead.

In a statement published by the semi-official Tasnim news agency on Tuesday, the council said Larijani died alongside his son, a security deputy of the secretariat, and several members of his protection team. It did not provide details on how or where the deaths occurred.

Earlier Tuesday, the Israeli minister of defense said Larijani, the head of Iran's Supreme National Security Council, was killed in an overnight attack on Iran.

Mar 17, 2026, 4:32 PM EDT

DNI head backs Trump’s Iran threat determination after Kent resignation

Hours after National Counterterrorism Center Director Joe Kent resigned over his objections to the war in Iran. Director of National Intelligence Tulsi Gabbard on Tuesday publicly backed President Donald Trump’s authority to determine what constitutes an imminent threat on the war.

“As our Commander in Chief, he is responsible for determining what is and is not an imminent threat, and whether or not to take action he deems necessary to protect the safety and security of our troops, the American people and our country,” Gabbard tweeted.

In the lengthy X post on Tuesday, Gabbard stopped short of directly addressing Kent’s resignation, or Kent by name.

“The Office of the Director of National Intelligence is responsible for helping coordinate and integrate all intelligence to provide the President and Commander in Chief with the best information available to inform his decisions,” Gabbard added.

“After carefully reviewing all the information before him, President Trump concluded that the terrorist Islamist regime in Iran posed an imminent threat and he took action based on that conclusion,” she continued.

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