Secretary of State John Kerry said Monday that the US government considers "every one of the options" possible to end the internal conflict in Syria suffers from four years ago.
"There has not been a single idea to address the Syrian conflict not come under scrutiny within the administration," said Kerry, Efe reported
In a speech at the Institute for Peace US in Washington, Secretary of State said that "no doubt" that the longer the duration of the civil war in the more difficult Arab country will recover.