On June 29, 2014—or the first of Ramadan, 1435, for those who prefer the Islamic calendar to the Gregorian—the leaders of the Islamic State of Iraq and Sham (ISIS) publicly uttered for the first time ...

PLATTSBURGH — When the Islamic State of Iraq and Sham proclaimed Abu Bakr al-Baghdadi to be caliph of all Muslims and the prince of believers, it recalled early Islam for some Muslims. Caliph, in ...