The US confirmed that it carried out air strikes on Tuesday in Syria's Deir Ezzor targeting facilities being used by groups affiliated with Iran's Islamic Revolutionary Guards Corps.
These strikes have come at a time when Joe Biden is attempting to agree a deal that was proposed by the European Union that would revive the 2015 nuclear deal with Iran.
The United States military's Central Command said in a statement that the strikes were carried out to protect US forces from attacks by Iran-backed groups in the region.
The US quoted an incident on 15 August that involved a drone attack carried out on a compound run by coalition and US-backed Syrian opposition fighters.
Army Colonel Joe Buccino said, "The president gave the direction for these strikes."
Central Command described the strikes as a "proportionate, deliberate action intended to limit the risk of escalation and minimize the risk of casualties."
In the statement it was not mentioned whether the strikes were carried out by manned or unmanned aircraft, nor did it confirm any casualties.
West of the Euphrates in Deir Ezzor province is home to a heavily concentrated number of Iranian-backed militias as they bring their supplies from Iraq through to the Al-Bukamal border crossing.