Abu Bakr al-Baghdadi, the Islamic State group's elusive leader

Islamic State group chief Abu Bakr al-Baghdadi, who purportedly appeared for the first time in five years in an IS propaganda video released Monday, remains the world's most wanted man, despite the jihadists' "caliphate" imploding weeks ago.After declaring himself caliph in 2014, Baghdadi held sway over seven million people across swathes of Syria and Iraq, where IS implemented its brutal version of Islamic law.It is unclear when the footage was filmed, but the man said to be Baghdadi referred t