"Iraq's instability is due to the malevolent U.S. presence, and security will not be achieved until the last foreign soldier leaves Iraqi territory," the Kataeb Hezbollah group said in a statement.
The group is classified as a terrorist group by Washington and is considered part of a larger umbrella organization known as the Islamic Resistance in Iraq.
The statement came shortly after the so-called Green Zone in Baghdad was attacked. Witnesses say that air defenses were activated and a fire broke out near the U.S. embassy.
The embassy was the target of a drone and rocket attack, a security source said.
It is unclear who is behind the latest attack, but pro-Iranian groups have recently attacked U.S. interests in Iraq, including diplomatic missions and military facilities at Baghdad airport.
Regime leaders dead
Israel's latest attacks on Iran were aimed at infrastructure belonging to the "terrorist regime" in Tehran, according to the military.
On Tuesday morning, news came that two of the regime's highest-ranking officials - security chief Ali Larijani and Gholamreza Soleimani, head of the paramilitary militia Basij - had been killed in Israeli attacks overnight.
Later in the day, Israel carried out airstrikes against about a dozen facilities linked to the Basij around Iran, according to a statement.
Iran, in turn, has continued to attack various countries in the region. A tanker was reportedly hit while it was anchored near the important oil port of Fujairah in the United Arab Emirates, the British maritime watchdog UKMTO reported, according to CNN. Damage to the ship was described as very minor; none of the crew were injured.
Explosions have also been heard in Dubai and the Qatari capital Doha.
“Not ready to leave”
U.S. President Donald Trump gave a new, tentative statement about how long the war will last at a press conference at the White House.
"We are not ready to leave yet, but we will leave in the near future," he said.
Trump was also asked about Iranian warnings of a "bloodbath" if the U.S. invades Iran with ground forces.
No, I'm not afraid - I'm really not afraid of anything, the president replied.
