NEW : President Barack Obama says a transition in Egypt must begin now . He said the protesters in Tahrir Square `` are angrier than ever '' after the address . NEW : Protesters and supporters of the Egyptian president clash in Alexandria . Mubarak 's position will only `` extend the agony , '' an opposition leader says . TL;DR NEW
NEW : President Barack Obama says a transition in Egypt must begin now . NEW : Protesters and supporters of the Egyptian president clash in Alexandria . Mubarak 's position will only `` extend the agony , '' an opposition leader says . TL;DR NEW