Of the 2 million Iraqi refugees, it is estimated that at least 700,000 are in Jordan, an enormous figure for a country of less than 6 million. Officials from the Jordanian Ministry of the Interior put the number around 500,000 but point out that it can fluctuate in either direction because of the large number of Iraqis who move in and out of Iraq conducting business. Aid officials, however, give estimates as high as 1 million. Most Iraqis in Jordan live in urban centers rather than in rural areas or refugee camps, but despite having been moderately integrated into Jordanian society, their lives are diverse and increasingly complicated. For Jordan, their arrival has magnified internal security concerns, strained social services, and aggravated economic and environmental problems.