Egyptian authorities arrested the publisher of a new book praising former UN nuclear watchdog Mohamed ElBaradei. Egyptian security officials detained Ahmed Mahanna on Saturday and seized his computer, manuscripts and copies of the book ElBaradei and the Dream of a Green Revolution. Mahanna was released on Sunday. Mohamed ElBaradei has emerged as Egypt’s highest-profile dissident since he retired as head of the International Atomic Energy Agency. He is considering running for president and challenging Hosni Mubarak, who has ruled Egypt since 1981.