The militia that was once the biggest defender of poor Shiites in Iraq, the Mahdi Army, has been profoundly weakened in a number of neighborhoods across Baghdad, in an important, if tentative, milestone for stability in Iraq.
It is a remarkable change from years past, when the militia, led by the anti-American cleric Moktada al-Sadr, controlled a broad swath of Baghdad, including local governments and police forces. But its use of extortion and violence began alienating much of the Shiite population to the point that many quietly supported American military sweeps against the group.
Prime Minister Nuri Kamal al-Maliki struck another blow this spring, when he led a military operation against it in Baghdad and in several southern cities.
The shift, if it holds, would solidify a transfer of power from Mr. Sadr, who had lorded his once broad political support over the government, to Mr. Maliki, who is increasingly seen as a true national leader.