Tue, 24 Jan 2012 23:50:02 +0100 (Reuters) - Senior Hamas leader Khaled Mashal (L) shakes hands with Sheikh Ahmed Mohamed el-Tayeb, the Egyptian Imam of al-Azhar Mosque during a Hamas delegation visit to the Imam of al-Azhar mosque in Cairo January 24, 2012. REUTERS/Mohamed Al Hams/Handout (EGYPT - Tags: POLITICS) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS