Factbox: Al Qaeda-inspired groups in Hamas-ruled Gaza

(Reuters) - Israeli forces killed a leader of the Army of Islam faction in the Gaza Strip on Friday, the second such strike on Palestinian militants with al Qaeda ties this week. Here are some facts about the constellation of ultra-conservative Islamists known as Salafis, who have challenged Hamas's rule in the isolated enclave. GROUPS * Jaysh al-Islam (the Army of Islam) is closely linked to ...