![In this picture released by the official website of the office of the Iranian supreme leader, Supreme Leader Ayatollah Ali Khamenei, left, greets Iraqi Shiite cleric Muqtada al-Sadr during a mourning ceremony commemorating Ashoura, the death anniversary of Hussein, the grandson of Prophet Muhammad, in Tehran, Iran, Tuesday, Sept. 10, 2019. Shiite Muslims around the world are observing Ashoura, one of the most sacred religious holy days for their sect, which commemorates the death of Hussein, at the Battle of Karbala in present-day Iraq in the 7th century. (Office of the Iranian Supreme Leader via AP)](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/3XWY354IFV76TEW6JDVJFYENAY.jpg?smart=true&auth=ad28fe230c1b2dcedbb074a4f39a0be5165b4679b34481b41195bebda16ffa06&width=400&height=225)
Iranian supreme leader Ayatollah Ali Khamenei greets Iraqi Shiite cleric Moqtada Al Sadr at a mourning ceremony commemorating Ashura, in Tehran, Iran.
Iranian supreme leader Ayatollah Ali Khamenei greets Iraqi Shiite cleric Moqtada Al Sadr at a mourning ceremony commemorating Ashura, in Tehran, Iran.
Iraqi cleric Moqtada Al Sadr to boycott general election
US adversary and militia leader exerts considerable influence over Iraq's political and social realm