Defense Secretary James Mattis on Friday defended President Trump’s decision to launch military strikes on Syria, saying Syrian President Bashar Assad “did not get the message” to cease the use of chemical weapons after a U.S. strike last year.

“Clearly the Assad regime did not get the message last year,” Mattis told reporters in a press briefing at the Pentagon. “This time our allies and we have struck harder.”

“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.”

Read more at The Hill.