NORTH KOREA . . . SOUTH EXTENDS A HAND

South Korea's president, Kim Young-sam, offered to provide the North with a modern light water nuclear reactor -- the kind that doesn't produce wastes that can be used in nuclear weapons -- if the North proved it was not making atomic arms. Those are the rough terms of the agreement that North Korean and U.S. negotiators reached Saturday before adjourning talks till September. A point of tension: The North, which hasn't responded to the overture, rejected a Southern proposal for Red Cross talks on reuniting 10 million family members separated since the Korean War.