ISLAMABAD (AP) — A quarter of a million Afghan children need education, food and homes after being forcibly returned from Pakistan, a nongovernmental organization said Thursday. Pakistan iscracking down on foreignersit alleges are in the country illegally, including 1.7 million Afghans. It insists the campaign is not directed against Afghans specifically, but they make up most of the foreigners in the country. More than 520,000 Afghans have left Pakistan since last October. Save the Childrensaid families are entering Afghanistan with “virtually nothing” and that nearly half of all returnees ar…