The airstrike targeted Iran-backed militia groups Kait'ib Hezbollah (KH) and Kait'ib Sayyid al-Shuhada (KSS)-killing one militiaman, according to an Iraqi militia official-and was a response to a rocket attack on an airbase in Iraq that is frequently used by the us military.
Since President Joe Biden entered the White House, Iranian-backed militants across the Middle East have struck an airport in Saudi Arabia with an exploding drone, and are accused of assassinating a critic in Lebanon and of targeting USA military personnel at an airport in northern Iraq, killing a Filipino contractor and wounding six others.
The Syrian Observatory for Human Rights, a Britain-based group that monitors the war in Syria, said the strikes targeted a shipment of weapons that were being taken by trucks entering Syrian territories from Iraq.
Russian Federation has been fighting alongside Syrian government forces in the country's nine-year civil war, clashing repeatedly with USA forces and US -allied Kurds who have been battling the terror group Islamic State on the same battlefield.
The Iranian foreign ministry strongly condemned what it called "illegal attacks" that are a "clear violation of human rights and global law".
Ellie Geranmayeh, a senior policy fellow at the European Council on Foreign Relations, said that while it was unrealistic the U.S. and Iran would stop competing for regional influence, "it is reasonable to expect them to keep those isolated from the JCPOA track which is in their mutual interest".
"This sort of warning - when strikes are already underway - [is worth] nothing", Mr. Lavrov said in a social media post.
"The administration's actions and Europe's support for US decisions in response to Iran's regional tests will determine whether Tehran believes it can be more aggressive regionally under Biden", he said.
"Our cooperation with the worldwide coalition forces is limited to a specific goal.to fight Daesh and its threat to Iraq, in a way that preserves the sovereignty of Iraq", the statement said, using an Arabic term for the Islamic State.
Iran's Foreign Minister Mohammad Javad Zarif has said recent rocket attacks against United States positions in Iraq are "suspicious" and the perpetrators must be identified.
In the protracted effort to see who will blink first between Tehran and the Biden administration, Thursday's strikes on Iranian-backed militia in Syria are but a tiny insect floating into both their gazes. He questioned President Joe Biden's authority to approve the airstrike.
The group also urged Iraqis to "expel the American occupation forces and prosecute the traitors who conspire with them". The group said 22 fighters from the Popular Mobilization Forces, an Iraqi umbrella group of mostly Shiite paramilitaries that includes Kataeb Hezbollah, were killed.
Iraqi officials, meanwhile, denied providing the USA with any assistance that led to targeting the Boukamal site, insisting cooperation with Washington was limited to the fight against the Islamic State terror group.
Syria's Foreign Ministry likewise chastised Washington, saying, "It [the Biden administration] is supposed to stick to worldwide legitimacy, not to the law of the jungle as [did] the previous administration".
"We stress the legitimate right of our Iraqi people to respond to this cowardly criminal operation", it said in a statement translated by the SITE Intelligence Group.
"I will be looking to the text of the War Powers Resolution as I evaluate the appropriate role for Congress in addressing both attacks against United States forces by Iranian-backed militias and America's response", he said.
The US has previously targeted facilities in Syria belonging to Kataeb Hezbollah, which it has blamed for numerous attacks targeting US personnel and interests in Iraq. "We will need more information to judge the efficacy of the strikes and the signal they send to Tehran and its proxies, but I believe the President acted well within the authorities of his office".
Last week, the Biden administration offered talks with Iran led by European allies as it seeks to salvage a 2015 nuclear deal, left on the brink of collapse after Biden's predecessor Donald Trump withdrew from it and imposed punishing sanctions on Iran. "But if the Iranians go up the escalatory ladder, we have no choice but to do the same in order to protect our forces and our partners".
Under Mr Trump, tensions with Iran soared, reaching a high point after a US-directed drone strike killed top Iranian general Qassem Soleimani.
The US military is in Iraq at the behest of the Iraqi government to help fight against the Islamic State.