How thoroughly and completed unexpected
US air strikes in Syria are encouraging anti-regime fighters to forge alliances with or even defect to Islamic State (Isis), according to a series of interviews conducted by the Guardian.
Fighters from the Free Syrian Army (FSA) and Islamic military groups are joining forces with Isis, which has gained control of swaths of Syria and Iraq and has beheaded six western hostages in the past few months.
Some brigades have transferred their allegiance, while others are forming tactical alliances or truces. Support among civilians also appears to be growing in some areas as a result of resentment over US-led military action.
On the other hand, it does guarantee perpetual war and unending military expenditure. Which is probably the point.