The first meeting in six years between the world’s superpowers – the United States and the Soviet Union – has begun in Switzerland. Early reports indicate the meeting between President Ronald Reagan and the Soviet leader Mikhail Gorbachev in Geneva has got off to a good start. Their first get together this morning – at the Villa Water Lily owned by the Aga Khan – lasted four times the scheduled 15 minutes. The summit continues tomorrow when the leaders are expected to discuss arms control, regional conflicts and human rights.