The White House said he would consult further with allies. Trump spoke Thursday with British Prime Minister Theresa May, and the White House said afterward they continued their discussion the need for a joint response. The White House also confirmed that Trump had spoken with French President Emmanuel Macron. Although Mattis noted the risks of military action, he emphasized that Syria's use of chemical weapons should not be tolerated. That meant airstrikes, possibly in tandem with France and other allies that have expressed outrage at the alleged Syrian chemical attack, could be launched within hours of a presidential decision.

Source: Philippine Star April 13, 2018 12:33 UTC