Two U.S. army soldiers and a civilian interpreter were killed by an attacker who targeted a convoy of American and Syrian forces before being shot dead. The Syrian Interior Ministry has described the attacker as a member of the Syrian security forces suspected of sympathizing with ISIS.

A smooth integration of the Kurdish-led Syrian Democratic Forces could build a stronger, more professional Syrian military capable of providing security throughout Syria.

President Trump said in a Truth Social post that it was an "ISIS attack against the U.S." and Syria and that there will be "very serious retaliation."

Two U.S. service members and one American civilian have been killed and three other people wounded in an ambush on Saturday by the Islamic State group in central Syria.

The Islamic State group claimed responsibility on Monday for an attack that killed four Syrian security personnel the day before, the SITE Intelligence Group reported.

President Trump said Saturday that 'we will retaliate' after two U.S. service members and one American civilian were killed in a Syria attack that the U.S. blames on the Islamic State group.