Trump's national security team meets as US says it has proof Syria carried out chemical attack

President Trump has been in discussions with allies, the White House says.

The president has been promising a decision since Monday and on Wednesday he tweeted that Russia should "get ready" because missiles "will be coming."

As of Friday evening, the White House had not provided any readout of the "deputies level" national security meeting, but White House deputy press secretary Raj Shah told CNN that the president has also been in constant communication with allies, including the British and French, expected to partner with U.S. military forces in the event of a strike.

Haley said that the president would not be rushed into a decision.

"If you rush decisions like this you make a mistake," Haley said.