Iran fired "more than a dozen ballistic missiles" into Iraq, targeting U.S. military and coalition forces early Wednesday, Pentagon officials said, in a major retaliation by the rogue regime after the U.S. airstrike that killed Iranian Quds Force Gen. Qassem Soleimani last week.

The missiles launched by Iran targeted military bases in Al-Assad and Erbil, the Pentagon added. They unfolded in two waves, each about an hour apart.

Initial assessments showed "no U.S. casualties," a U.S. military official in Baghdad told Fox News, adding that the U.S. was continuing to look into possible damage.

President Trump did not immediately respond, and the White House eventually said he would not make an address to the nation or other on-camera statement Tuesday.

White House press secretary Stephanie Grisham said after the attack: "We are aware of the reports of attacks on U.S. facilities in Iraq. The president has been briefed and is monitoring the situation closely and consulting with his national security team." It was not immediately clear how the U.S. may respond.