Throughout the bloody Syrian conflict, the ruling regime of President Bashar Assad has derided the armed opposition for its reliance on foreign fighters, usually seasoned militants that come from the battlefields of Chechnya, Pakistan, Afghanistan or Iraq. But as a new campaign is set to start in the mountainous corridor between Damascus and the Lebanese border, it is becoming increasingly clear that the government is just as dependent on outsiders for success. In Qalamoun, a strategic region that has been in rebel hands for most of the war, the Iranian-backed Lebanese militia Hizballah is preparing to take on rebels in a drawn-out fight that could dictate the outcome of the Syrian conflict.[…]