US President Barack Obama has signed a secret order allowing the CIA and other American agencies to support rebels seeking to overthrow the Assad regime, a US government source told Reuters. Obama reportedly gave the order, known as an intelligence “finding”, earlier this year. The presidential finding also provides for US collaboration with a secret command center operated by Turkey and its allies. The full extent of the assistance the “finding” allows the CIA to give the Syrian rebels is unclear. It is also unknown precisely when Obama signed the order.