President Donald Trump hailed the U.S.-led intervention in Syria as “perfectly executed,” adding that the military campaign to degrade Bashar Assad’s chemical weapons capability had accomplished its goals.

Less than a day after the U.S., British and French forces targeted suspected chemical weapons sites in retaliation for an attack that left dozens of civilians dead last week, Trump thanked the U.S. coalition partners.

Defense Secretary James Mattis called the strikes a “one time shot” aimed at the Syrian government’s chemical weapons infrastructure.

“Clearly, the Assad regime did not get the message last year,” Mattis told reporters on Friday from the Pentagon.

“Together we have sent a clear message to Assad and his murderous lieutenants that they should not perpetrate another chemical weapons attack for which they will be held accountable.”

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