UNITED NATIONS Russia’s top diplomat accused the United States, South Korea and Japan on Wednesday of preparing for war with North Korea. Foreign Minister Sergey Lavrov told a U.N. news conference that this new military bloc brought together by the United States is building up military activity and conducting large-scale exercises. All of a sudden South Korea’s rhetoric ”became even more hostile towards Pyongyang,” he said. “In Japan as well, we hear aggressive rhetoric” and it is seriously