REUTERS/Social Media Website via Reuters TV - A man purported to be the reclusive leader of the militant Islamic State Abu Bakr al-Baghdadi has made what would be his first public appearance at a mosque in the centre of Iraq's second city, Mosul, according to a video recording posted on the Internet on July 5, 2014, in this still image taken from video.

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Key Dates in the Rise of the Islamic State (ISIS)

December 12, 2014, Fred Dews

“While [the Islamic State] will always be a terrorist organization at its most basic level,” writes Brookings Doha Center Visiting Fellow Charles Lister in his new analysis paper, “its effective attempt at establishing a proto-state across Syria and Iraq has demonstrated the scale of its goals and capabilities.” In the paper, “Profiling the Islamic State,” Lister traces IS’s roots from Jordan to Afghanistan, and then into Iraq and Syria. Key dates in the rise of the organization, drawn from the paper, are presented here.

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