The airstrikes came just hours after an attack killed and wounded American and British servicemen at a base north of Baghdad.
No American casualties have been reported after Iran launched ballistic missiles at two military bases in Iraq.
Sen. Lindsey Graham went after Colin Kaepernick after the former NFL football player criticized the United States airstrike that killed Iranian commander Qassem Soleimani.
In a series of tweets, President Donald Trump vowed to attack Iranian cultural sites, which many pointed out is considered a war crime under international law.
Thousands marched through Baghdad on Saturday for Iran’s top general, who was killed in a U.S. airstrike.
Republicans and Democrats are speaking out after the Pentagon ordered a deadly airstrike of Iranian commander Qassem Soleimani
The Trump administration directed the killing of the senior Iranian commander in an airstrike on Baghdad International Airport.
The airstrike raises further concerns about the European Union’s policy of partnering with Libyan militias to prevent migrants from crossing the Mediterranean.
“Scores killed, even more injured, most under the age of 10," said an aid agency official.
The Western-backed alliance has been fighting in the war, which has killed more than 10,000 people, for three years.