A new report from Refugees International says the Iraqi government has failed to respond to the needs of an estimated 2.7 million internal refugees and in turn militia groups have moved in to fill the void. Refugees International says the largest humanitarian organization in Iraq is now the Sadr movement affiliated with Shiite cleric Muqtada al-Sadr, a fierce critic of the US occupation. Sadr has set up a program modeled on Hezbollah’s work in Lebanon to offer shelter, food and non-food items to hundreds of thousands of Shiites in Iraq.