U.S. strikes targets in Iraq and Syria as retaliation for fatal drone attack in Jordan

The U.S. military launched an air assault on dozens of sites in Iraq and Syria used by Iranian-backed militias and Iran's Islamic Revolutionary Guard Corps (IRGC) on Friday, in the opening salvo of retaliation for the drone strike that killed three U.S. troops in Jordan last weekend, according to the U.S. military and officials.

President Joe Biden and other top U.S. leaders have been warning for days that the U.S. would strike back at the militias, and they made it clear that it wouldn't be just one hit but would be a "tiered response" over time.

"This afternoon, at my direction, U.S. military forces struck targets at facilities in Iraq and Syria that the IRGC and affiliated militia use to attack U.S. forces," Biden said in a statement. "Our response began today. It will continue at times and places of our choosing."

The massive barrage of strikes by manned and unmanned aircraft hit more than 85 targets at seven locations, including command and control headquarters, intelligence centres, rockets and missiles, drone and ammunition storage sites and other facilities that were connected to the militias or the IRGC's Quds Force, the Guard's expeditionary unit that handles Tehran's relationship and arming of regional militias.

U.S. Central Command said the strikes used more than 125 precision munitions, and they were delivered by numerous aircraft, including long-range bombers flown from the United States. One official, who spoke on condition of anonymity to discuss details of the operation, said B-1 bombers were used.

Two Iraqi militia officials who spoke on condition of anonymity because they were not authorized to speak to journalists said three houses used as headquarters were targeted in al-Qaim, Iraq, including a weapons storage area. An operations headquarters of the Popular Mobilization Forces, a coalition of Iranian-backed militias, in Akashat, Iraq, and weapons stores were targeted.

The assault came just hours after Biden and top defence leaders joined grieving families to watch as the remains of the three army reserve soldiers were returned to the U.S. at Dover Air Force Base in Delaware.

Global Affairs Canada says it strongly condemns the attack against U.S. forces in Jordan.

"We extend our condolences to the families of U.S. personnel killed in the attack. Supporting our partners in the fight against terrorism in the region is something Canada will continue to do," said spokesperson Pierre Cuguen. "The stability of the region is a priority for Canada. We will meet these challenges by being pragmatic, and working with key allies and partners."

It was unclear what the next steps will be, or whether the days of U.S. warnings had sent militia members scattering into hiding, making it more difficult for the U.S. to detect and strike them. But it was evident the recent statement released by Kataib Hezbollah, one of the main Iran-backed militias, saying it was suspending attacks on American troops had no impact on the administration's plans to strike back.

The U.S. strikes appeared to stop short of directly targeting Iran or its Revolutionary Guard Quds force within its borders, as the U.S. tries to prevent the conflict from escalating even further. Iran has denied it was behind the Jordan strike.

Just Friday morning, Iran's hard-line President Ebrahim Raisi reiterated earlier promises by Tehran to potentially retaliate for any U.S. strikes targeting its interests. We "will not start a war, but if a country, if a cruel force wants to bully us, the Islamic Republic of Iran will give a strong response," Raisi said.

In a statement this week, Kataib Hezbollah announced "the suspension of military and security operations against the occupation forces in order to prevent embarrassment to the Iraqi government." But Harakat al-Nujaba, one of the other major Iran-backed groups, vowed Friday to continue military operations against U.S. troops.

The U.S. has blamed the Islamic Resistance in Iraq, a broad coalition of Iran-backed militias, for the deadly attack in Jordan, but it has not yet narrowed it down to a specific group. Kataib Hezbollah is, however, a top suspect.