One of North Korean leader Kim Jong-il's closest aides has died in a car accident, state media announced on Monday, following weeks of rumours and conspiracy theories about the secretive country's leadership. Kim Yong-sun, a top adviser on foreign policy and relations with South Korea, failed to recover from brain injuries caused by the accident in June, according to the state news agency. Rumours of the crash had swirled for weeks in Seoul's diplomatic community, while the health of both Kim Jong-il and his wife has also been the subject of speculation. Kim Jong-il - known as the Dear Leader...