U.S. Says Banned Nuclear Technology Went to Pakistan and India By DAVID S. CLOUD WASHINGTON, April 8 - Federal prosecutors investigating the smuggling of nuclear technology disclosed Friday that a South African businessman had pleaded guilty to arranging illegal exports of American-made equipment both to Pakistan and its regional rival, India. Asher Karni, an Israeli who lives in South Africa, entered the guilty plea last September and has been cooperating with investigators, prosecutors said. The prosecutors, however, kept the proceeding secret until Friday, when they unsealed the plea agreement and charges brought against Humayun Khan, an Islamabad businessman with longstanding...