State Department tells Americans worldwide to 'exercise increased caution'

The war entered its fourth week on Saturday.

ByKevin Shalvey, Jon Haworth, Nadine El-Bawab, and Meredith Deliso
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.

Key Headlines

Here's how the news is developing.
Mar 16, 2026, 4:18 AM EDT

Dubai airport begins 'gradual' resumption of flights after drone impact

Dubai International Airport began resuming some flights on Monday morning after a drone impact had sparked a fire nearby, airport and city officials said.

"Dubai Airports confirms the gradual resumption of some flights to and from Dubai International (DXB) to selected destinations, following the temporary suspension implemented as a precautionary measure," a Dubai Airports spokesperson said, according to an alert on the airport’s website.

A smoke plume rises from an ongoing fire at Dubai International Airport in Dubai on March 16, 2026.
AFP via Getty Images

The Dubai Media Office said hours earlier that authorities were responding to an incident involving a drone near the airport. Firefighters had been battling a blaze, the office said.

A smoke plume rises from an ongoing fire at Dubai International Airport in Dubai on March 16, 2026.
AFP via Getty Images

"Dubai Civil Defence teams have successfully contained the fire resulting from impact to one of the fuel tanks in the vicinity of Dubai International Airport," the office said early on Monday on social media. "No injuries have been reported."

Some flights were diverted to Al Maktoum International Airport, the office said.

-ABC News' Jessica Gorman

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