Iran's Supreme Leader Ayatollah Ali Khamenei, left, greets Iraqi Shiite cleric Moqtada Al Sadr during a mourning ceremony commemorating Ashura, in Tehran, Iran in 2019. AP
Iran's Supreme Leader Ayatollah Ali Khamenei, left, greets Iraqi Shiite cleric Moqtada Al Sadr during a mourning ceremony commemorating Ashura, in Tehran, Iran in 2019. AP

Militia fighters stationed across Iraq after alleged threats to holy sites