FOREIGN MINISTERS Taro Nakayama of Japan and Alexander Bessmertnykh of the Soviet Union met Friday in initial talks to set the stage for next month's historic visit by Soviet President Mikhail Gorbachev. . . . TWO MASKED ATTACKERS opened fire on a van selling candy in a predominantly Catholic neighborhood in Craigavon, Northern Ireland, killing a man and two teenage girls, police said Friday. . . . MILWAUKEE FIRE OFFICIALS said Friday a blaze in a two-story wood-frame home that killed four children and seriously injured a relative who tried to save them began when a space heater ignited a piece of clothing. . . . THE LEADER of a Hare Krishna spinoff community was convicted Friday in Martinsburg, W.Va., of racketeering and fraud charges alleging he authorized murder, kidnapping and beating of his devotees to protect an illegal enterprise.