(CNN) — President Donald Trump said Saturday that there will be “very serious retaliation” after two US soldiers and one civilian interpreter were killed in an ambush in Syria on Saturday.

Three others were wounded in the attack, which was carried out by a single ISIS gunman, US Central Command and the Department of Defense said in statements Saturday.

“We will retaliate,” Trump told reporters at the White House. He said the country is mourning “the loss of the three great American patriots” and praying for the three wounded, who “seem to be doing pretty well.”

The two servicemembers killed were members of the Iowa National Guard, according to a person briefed on the situation who was granted anonymity because they did not have permission to speak publicly.

The president noted the US’

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