Afghan refugee children sit on a truck, about to leave for their homeland, Thursday, May 23, 2002 in Karachi, Pakistan. Under the voluntarily repatriation program, organized by the U.N. High Commissioner for Refugees, about 52,000 Afghans have gone home since April last year. The fresh convoy comprised over 4,000 refugees left Thursday for Afghanistan. (AP Photo/Zia Mazhar)