THE US-LED COALITION AIRSTRIKES in Syria put a spotlight on the shady terrorist group known as Khorasan, a small but potent Al Qaeda offshoot led by Muhsin al-Fadhli, left, whose sole objective is pulling off another 9/11 terror attack.'Sustained campaign' against ISIS poses complex challenges for military, CongressUS strikes aimed at halting Al Qaeda plot in Syria2nd video purportedly shows British hostage | Wife of ISIS hostage pleads for his releaseVIDEO: Obama addresses airstrikes | Israel shoots down Syrian aircraft | VIDEO: Syrian jet shot down Breakdown of support from Arab allies | VIDEO: Will ISIS retaliate?