A rare daytime US airstrike in Sadr City on Thursday came as residents said that soldiers were warning them to leave parts of the district, which is a bastion of support for the anti-American cleric Moqtada al-Sadr.
Readers write about outsiders' perceptions of China and how to better train the Iraqi Army.
Residents are moving back to Saidiyah, a neighborhood once racked by sectarian violence that is now guarded by a 12-foot-high wall.
As US troops draw down, Iraqi forces are taking the lead. Reviews so far are mixed.
US general in Baghdad says bringing basic services to Sadr City to weaken Sadr and his militia can work this time.
Tensions are rising between Kurdish, Arab, and Turkmen factions over power and populations in the province, the heart of northern Iraq's oil industry.
The summit of Arab neighbors Tuesday is the third attempt to gain more support for Iraq's reconstruction from Sunni states. Baghdad's crackdown on Shiite militias may help.