Muslims in most parts of the world began celebrating on Sunday the Eid al-Adha festival in the shadow of the devastating war in the Gaza Strip. The major four-day holiday, which falls in the month of the Hajj pilgrimage to Mecca in Saudi Arabia, is based on Islam’s lunar calendar. In a sermon marking Eid, a preacher at Islam’s holiest mosque in Mecca voiced support for Palestinians. “This Eid does not make us forget our helpless brothers and our bereft loved ones in Palestine,” Sheikh Abdel-Rahman al-Sudais, a senior Saudi religious official and cleric, told worshippers at the Grand Mosque in …