Well Jiyoon, the exact number of missiles fired is yet to be confirmed but multiple ballistic missiles, more than a dozen were launched, according to the U.S. Assistant to the Secretary of Defense for Public Affairs Jonathan Hoffman.
President Trump said Tuesday night that "all is well" after Iran launched a missile attack against two air bases in Iraq that house United States troops - a strike that caused limited casualties, officials said.
While the attacks marked the latest escalation with Tehran in the precarious aftermath of a USA drone strike that killed the top Iranian general, Qassem Soleimani, they appeared to open the door to reducing tensions after it became clear that no American forces were killed. Iranian television showed mourners celebrating the attack.
White House spokeswoman Stephanie Grisham said President Trump had been briefed and "closely monitored the situation".
"All is well!", Trump said Twitter.
Trump said he had been informed that attacking cultural sites would be against global laws signed by the US and his own administration.
One source said early indications were of no USA casualties, while other United States officials declined to comment.
Germany, Denmark, Norway and Poland said none of their troops in Iraq were hurt.
Iraq has sanctioned the attack, making it technically within the bounds of worldwide law, according to sources in the Baghdad Military Command and Popular Mobilization Units (PMU) speaking with Citizen Truth's Catherine Shakdam. The attack comes after the killing of a top Iranian military commander by the US. The definition of war where military forces are attacking military forces certainly we are at war.
Iranian Foreign Minister Javad Zarif meanwhile said Tehran had "concluded proportionate measures in self-defence" but did "not seek escalation or war".