President Trump has gone through a 180-degree change on this issue. As candidate for president, Trump then accused Obama of not taking a tough enough stance in Syria, and even said the US should fight ISIS with Assad. He said it was now his responsibility to respond to the chemical attack: "I will have that responsibility and carry it very proudly." JUST WATCHED Survivor of 2013 Syria attack pleads for action Replay More Videos ... MUST WATCH Survivor of 2013 Syria attack pleads for action 05:29Days before Assad's chemical attack, the US had said it would only focus on ISIS, not on Assad. "We are trying to get the parties in Syria to agree on a situation in which President Assad plays no part," the UK's Fallon said.

Source: CNN April 07, 2017 15:11 UTC