IOM’s DTM aims to monitor displacement and provide accurate data about the IDP and returnee populations in Iraq. Data is coll ect ed through IOM’s Rapid Assessment and Response Teams (RARTs) composed of over 100 staff members deployed across Iraq. Data is gathered through a well established, large network of over 9,500 key informants, which includes community leaders, mukhtars, local authorities and security forces. It should be noted that limited access due to se cur ity issues and other operational constraints can affect information gathering activities.