US retaliatory airstrikes updates: White House vows to take 'more action'

Saturday's strikes in Yemen followed ones in Iraq and Syria the day prior.

ByAlexandra Hutzler, Jon Haworth, and Nadine El-Bawab
Last Updated: February 4, 2024, 10:47 AM EST

The United States on Friday began to carry out airstrikes against Iran-backed militants and Iranian military targets in Iraq and Syria in retaliation for a drone attack on an American base in Jordan on Jan. 28 that killed three U.S. service members.

Dozens of other American troops were wounded in the drone attack on the Tower 22 base near Jordan's border with Iraq and Syria. The U.S. says Iran is responsible for funding and arming the militants while Iran has denied involvement.

U.S. President Joe Biden had quickly warned that America would respond forcefully, escalating U.S. involvement in the Middle East after months of trying to contain tensions from boiling over into a broader war in the region.

Latest headlines:

Here's how the news is developing. All times Eastern.
Feb 2, 1:59 pm

What we know about the drone attack on US base in Jordan

The U.S. has attributed the drone attack on the American base in Jordan to the Islamic Resistance in Iraq, an umbrella group of Iran-backed militias.

According to a U.S. official, the drone that successfully hit the base was an Iranian-made Shahed drone, similar to those used by the Russians on the battlefield in Ukraine.

Iran has denied involvement in the Jordan strike. But President Joe Biden earlier this week faulted Iran for providing munitions and funding to these different proxy groups.

The U.S. base is known as Tower 22, a major logistical hub for U.S. troops still in Syria on a mission to prevent a resurgence by Islamic State fighters. According to Central Command, there are approximately 350 U.S. Army and Air Force personnel deployed to the base.

In this Maxar satellite image, Tower 22, which houses a small number of U.S. troops, is shown in northern Jordan.
2024 Maxar Technologies via Getty Images

Feb 03, 2024, 5:16 PM EST

Austin warns Houthis to end attacks on shipping vessels

U.S. Defense Secretary Lloyd Austin released a statement saying the strikes on Yemen aim to "disrupt and degrade the capabilities of the Iranian-backed Houthi militia" from continuing to attack vessels in the Red Sea.

The strikes targeted Houthis' deeply buried weapons storage facilities, missile systems and launchers, air defense systems, and radars, according to a statement from Austin.

PHOTO: The U.S. and U.K. led a coalition of strikes against Houthis in Yemen focused on degrading the Houthis capabilities in shipping attacks, US officials say, stressing that the strikes are unrelated to strikes against targets in Iraq and Syria.
The U.S. and U.K. led a coalition of strikes against Houthis in Yemen focused on degrading the Houthis capabilities in shipping attacks, US officials say, stressing that the strikes are unrelated to strikes against targets in Iraq and Syria on Friday.
U.S. Central Command

"This collective action sends a clear message to the Houthis that they will continue to bear further consequences if they do not end their illegal attacks on international shipping and naval vessels," Austin said.

He added, "We will not hesitate to defend lives and the free flow of commerce in one of the world's most critical waterways."

-ABC News' Nate Luna

Feb 03, 2024, 5:05 PM EST

US, UK launch strikes against 36 Houthi targets in Yemen

The militaries of the U.S. and U.K. launched strikes against 36 Houthi targets in Yemen, with support from Australia, Bahrain, Canada, Denmark, the Netherlands and New Zealand, the countries said in a joint statement Saturday.

The strikes targeted 13 locations in Yemen in response to the Houthis' continued attacks against international and commercial shipping as well as naval vessels transiting the Red Sea, the statement said.

PHOTO: The U.S. and U.K. led a coalition of strikes against Houthis in Yemen focused on degrading the Houthis capabilities in shipping attacks, US officials say, stressing that the strikes are unrelated to strikes against targets in Iraq and Syria.
The U.S. and U.K. led a coalition of strikes against Houthis in Yemen focused on degrading the Houthis capabilities in shipping attacks, US officials say, stressing that the strikes are unrelated to strikes against targets in Iraq and Syria on Friday.
U.S. Central Command

"These precision strikes are intended to disrupt and degrade the capabilities that the Houthis use to threaten global trade, and the lives of innocent mariners, and are in response to a series of illegal, dangerous, and destabilizing Houthi actions since previous coalition strikes on January 11 and 22, 2024, including the January 27 attack which struck and set ablaze the Marshall Islands-flagged oil tanker M/V Marlin Luanda," the statement said.

-ABC News' Nate Luna

Feb 03, 2024, 4:37 PM EST

US strikes begin in Yemen

The next round of retaliatory strikes for the attack in Jordan are ongoing in Yemen at this time, three U.S. officials confirmed to ABC News.

The strikes are in addition to the six anti-ship missiles that were taken out, also in Yemen, earlier in the day.

-ABC News' Nate Luna

Feb 03, 2024, 2:37 PM EST

29 members of Iranian militias killed in strikes on Syria

The Syrian Observatory for Human Rights, a group which reports on war in Syria, confirmed that 29 members of Iranian militias were killed in airstrikes on 28 positions.

Separately, Iraq's Popular Mobilization Forces, a state security force including Iran-backed groups, said that 16 its members were killed including fighters and medics.