In parallel with the operation, al-Maliki and ISCI sent a delegation to meet with Muqtada al-Sadr in Iran. Hadi al-Amiri, leader of ISCI's Badr Organization, and Ali al-Adib, a Dawa leader, were tasked with convincing al-Sadr to call off his militia. They arrived in Iran on the same day that Ayatollah Ali al-Sistani, the key Shiite cleric in Najaf, announced after a meeting with al-Sadr representatives that he would not interfere, and that "arms should be in the hands of the government only." Recognizing that this presented a no-win situation for him, al-Sadr announced late on March 30
that Mahdi Army members should "put aside their arms," and that anyone carrying arms thereafter was not a member. This gave al-Maliki license to target those still bearing arms, subsequently forcing the "special groups" to cease their activities or risk exposure.