Photo Gallery: Islam's Old Sectarian Divide 09/06/2012
 They began as a cry for freedom in the Middle East, but the Arab rebellions...
AFP

They began as a cry for freedom in the Middle East, but the Arab rebellions have become increasingly characterized by an ancient sectarian conflict between Sunni and Shiite Muslims. The power struggle between the two groups is sparking new fears along old frontlines. Here, an opposition fighter in Syria lobs a Molotov cocktail at government forces in August 2012.