A supporter of Muslim Brotherhood's president-elect Mohamed Morsy celebrates his victory at the election at Tahrir Square in Cairo June 24, 2012. Morsy pledged on Sunday to be a president for all Egyptians in a televised address after the Islamist was declared the winner of last weekend's election - an event he called a "historic moment". REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: POLITICS ELECTIONS)