Supporters of Iraqi cleric Moqtada Al Sadr take to the streets of Nasiriyah against a rival bloc's nomination for prime minister this summer. AFP
Supporters of Iraqi cleric Moqtada Al Sadr take to the streets of Nasiriyah against a rival bloc's nomination for prime minister this summer. AFP

Who is Iraq's Moqtada Al Sadr? The cleric who took Baghdad to the brink of war