Iraq’s embattled prime minister offered his resignation on Friday, following the bloodiest day in weeks of unrest. Adel Abdel Mahdi, who took up the post of premier last year, said he would submit to the parliament a formal letter requesting my resignation to "preserve the blood" of Iraqis. Demonstrators greed the news with cheers, throwing rice and dancing to music in Baghdad's Tahrir (Liberation) Square. “Long live the revolution, long live the heroes. Thank you to the people,” one protester said over a loudspeaker. Mr Mahdi’s decision came hours after Grand Ayatollah Ali Sistani, Iraq's top Shia Muslim cleric, gave a sermon urging lawmakers to reconsider their support for the government, in a major boost to Iraqi demonstrators who have taken to the streets against a ruling class. "It's our first victory, and we're hoping for many more," shouted one demonstrator. "It's also a victory for the martyrs who fell," he said. An Iraqi anti-g