US Defense Secretary Lloyd Austin revealed that the air strike on "militias" in Syria was on his recommendation, and confirmation of what was said earlier regarding "a timely response."
The US Secretary of Defense said, "I am confident that the building that was targeted in Syria is being used by the militias responsible for the recent attacks."
The US Defense Department (Pentagon) announced that the Air Force launched a direct strike against a site belonging to Iranian-backed groups inside Syria, on Thursday, according to the Sky News Arabia correspondent.
The Pentagon statement by the office of his spokesman, John Kirby, said that the US defensive air strike "was carried out with high accuracy against the Hezbollah Brigades and the Sayyid al-Shuhada Brigades, supported by Tehran, inside Syrian territory."
The statement added, "With President Joe Biden's directives, US forces have carried out air strikes against the infrastructure of Iranian-backed groups in eastern Syria."
These strikes came as a response to the recent attacks that targeted US and other coalition forces in Iraq.
The statement pointed out that the US air strikes "were carried out with diplomatic measures, including consultations with allies, and thus it is a clear message that Biden is committed to defending the Americans and the allied forces."
A Pentagon official told reporters on Thursday evening that a group of military targets were completely destroyed after receiving intelligence information that the armed group was planning to carry out missile attacks against US forces' sites deployed in Iraq.
"The target group inside Syria receives instructions and direct support from the Iranian Revolutionary Guard, and has a long history of carrying out terrorist attacks against US interests," the official said.
He said, "The United States reserves the right to self-defense and deter any Iranian threat, whether in Syria or outside it."
The strike is the first military operation by the Biden administration against Iranian groups, at a time when it is seeking to resume a dialogue with Tehran, with European mediation, with the aim of reviving the nuclear agreement concluded in 2015.
For its part, the Syrian Observatory for Human Rights announced, on Friday morning, that the night raids launched by US fighters on sites in eastern Syria near the border with Iraq, resulted in the deaths of at least 17 Iranian loyalists.