Tensions escalate in Egypt
An anti-Mursi protester runs to throw a tear gas canister back during clashes with riot police at Tahrir Square in Cairo November 27, 2012. Opponents of President Mohamed Mursi rallied in Cairo's Tahrir Square for a fifth day on Tuesday, stepping up calls to scrap a decree they say threatens Egypt with a new era of autocracy. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: POLITICS CIVIL UNREST)