Iran fired a number of missiles at two Iraqi bases housing US troops

Iran fired a number of missiles at two Iraqi bases housing US troops Wednesday in retaliation for the American strike that killed a top Iranian general last week. The early morning attack presents President Donald Trump with the biggest test of his presidency to date.

A US official told CNN that there were no initial reports of any US casualties from the attack, but an assessment of the impact of the strikes is underway. Iraq's joint military command said there were no casualties among Iraqi military forces.

"Between 1:45 a.m. and 2:45 a.m., Iraq came under an attack of 22 missiles," the Iraqi military said in a statement. "All missiles struck coalition bases."

White House aides had initially made plans for a possible address to the nation by Trump after the missile strikes, according to two officials, but a White House official said the President would not speak immediately.

Trump later tweeted, "All is well! Missiles launched from Iran at two military bases located in Iraq. Assessment of casualties & damages taking place now. So far, so good! We have the most powerful and well equipped military anywhere in the world, by far! I will be making a statement tomorrow morning."

The attack comes days after the US killed top Iranian general Qasem Soleimani in an airstrike in the Iraqi capital of Baghdad. The administration had sought to cast that strike as an attempt to de-escalate tensions with Iran, but Tehran has described it as an "act of war" and "state terrorism."

In a televised address to the nation Wednesday, Supreme Leader Ayatollah Ali Khamenei said that Iran gave the US "a slap in the face last night," in reference to the attacks.

He added that America had cast Soleimani as a "terrorist," which was "unjust and unfair."

The Islamic Revolutionary Guards Corps, an elite wing of the Iranian military, said in a statement that the attacks on Iraqi bases were "hard revenge" for the death of Soleimani. The IRGC said any country housing US troops could be subject to "hostile and aggressive acts" and called on American citizens to demand the government remove US troops from the region.

It warned the US: "If you repeat your wickedness or take any additional movements or make additional aggression, we will respond with more painful and crushing responses."

An image taken from video shown on Iran's Sima News reportedly shows the launch of the missiles fired at the Ain al-Asad airbase in Iraq.

Iran launched more than a dozen missiles at the al-Asad airbase, which houses US troops, and American and coalition forces in the town of Erbil, Jonathan Hoffman, a Pentagon spokesperson, said Tuesday evening.

Iraq received "an official verbal message" from Iran about the missile attack shortly before midnight on Wednesday, according to a statement from Iraq's Prime Minister Adil Abdul Mahdi.

He said that Iraq was told that: "The strike would be limited to the whereabouts of the US military in Iraq, without giving the exact location." Once they received the warning, Iraqi military leaders were warned "to take the necessary precautions."

"No casualties so far from the Iraqi side, and we have not officially received information on the losses from the coalition forces," the Prime Minister added.