The Sadr militia , known as the Mahdi Army , remains a force that could disrupt heavily Shiite southern Iraq as well as the huge Sadr City slum in northeast Baghdad that is Mr. Sadr 's power base .
Iraq
Baghdad
/location/country/capital
Iraq
Sadr City
/location/location/contains
Iraq
Baghdad
/location/location/contains
Baghdad
Sadr City
/location/location/contains
LOCATION
Iraq
LOCATION
Sadr City
LOCATION
Baghdad