Every day al-Sadr draws breath, he gets stronger and more influential.
He should have been taken out months ago.
If the IGC doesn't take him out, WE will regret it in the near future, ala bin Laden, Sadam Hussein, et al.
My son was patrolling at Najaf. It was an open secret that we could have taken him easily as he traveled between Mosques. The guess is that Sistani save his hide.