Among the AfghansArthur Bonner, a New York Times reporter with long experience as a foreign correspondent in Asia, Africa, and Latin America, spent most of 1985 and 1986 in Afghanistan and Pakistan researching the aftermath of the 1979 Soviet invasion of this mountainous, fiercely Islamic country. Bonner made another trip to Pakistan in mid 1987 to test his conclusions against recent events. Bonner therefore brings both recent experience and the sharp eye of a veteran