A team of officials from the United States, China and Russia headed Wednesday to North Korea’s main nuclear facilities to study how to disable them so that they can no longer be used to produce atomic bombs. Allowing the visit is the latest positive step by North Korea toward disarming, creating enough goodwill between Washington and Pyongyang that the U.S. ambassador to South Korea suggested Wednesday that President Bush and North Korean leader Kim Jong Il could hold a summit if North Korea totally disarms. Full Story