The White House said Friday the attack on a Syrian air base was “very decisive, justified and proportional.”

The missile attacks, which destroyed at least 20 Syrian jets, were the result of a “72-hour evolution,” White House Press Secretary Sean Spicer told reporters in Palm Beach, Fla.

He declined to give more information about further actions President Trump might take in the region, saying, “He’s not going to telegraph his next move.”

When asked if Syrian President Bashar al-Assad should leave office, Spicer said Syria needs to abide by an accord not to use chemical weapons.

“First and foremost the president believes that the Syrian government [and the] Assad regime should abide by the agreement they made not to use chemical weapons,” he said.

As for concerns about a conflict with Russia leading to World War III, Spicer pointed to widespread support for the US from the “world community.”

“They understand that the U.S. acted appropriately and in most cases there is widespread praise from around the globe for the president’s actions,” he said.

Spicer added that there was no political contact with Russia before the strikes, but Russian military was alerted.

“Last night sent a very clear signal,” he said.