Tom Barrack, the U.S. Damascus called the attacks "an unjustified act of aggression" that imperilled regional security. Key points and original sources are listed below.

• Tom Barrack, the U.S. ambassador to Turkey and special envoy for Syria and Iraq, called the strikes an "unnecessary escalation."S1

• Damascus called the attacks "an unjustified act of aggression" that imperilled regional security.S2