The US military in Iraq says Iran continues to aid militants, but Iraqis now say that they want their own evidence.
At least 47 US soldiers were killed in Iraq in April, making it the deadliest month since September. Many of the casualties are a result of the recent assault on the Mahdi Army.
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.
Readers write about college diversity, use of the Mahdi Army name, fuel budgets, and praeteritio.
Secretary of State Rice arrived in Baghdad on Sunday as Iraqi, US, and British forces continued to clash with the Mahdi Army.
US forces hope that the wall will reduce militia attacks, allow for reconstruction.
American forces in Iraq announced Monday ambitious public-works plans to win support in Sadr City.