British Prime Minister David Cameron (front row center) walks with Jordanian Foreign Minister Nasser Judeh (second from right) and Andrew Harper (right), U.N. High Commissioner for Refugees (UNHCR) representative to Jordan, during his visit to the Zaatari refugee camp in Mafraq, Jordan, on Wednesday, Nov. 7, 2012. (AP Photo)

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British Prime Minister David Cameron (front row center) walks with Jordanian Foreign Minister Nasser Judeh (second from right) and Andrew Harper (right), U.N. High Commissioner for Refugees (UNHCR) representative to Jordan, during his visit to the Zaatari refugee camp in Mafraq, Jordan, on Wednesday, Nov. 7, 2012. (AP Photo)