Kim Jong Un: North Korea has achieved 'great success' with nuclear tests

North Korean leader Kim Jong Un said Friday his country had achieved "great success" and "unprecedented results" with a nuclear weapons test in January and a rocket launch of a space satellite in February. Kim made the remarks to North Korea's highest political body, the Workers' Party Congress Over the course of the next few days, about 3,000 delegates are expected to endorse Kim's leadership, formalizing a rushed transition of power that followed the death of his father, Kim Jong Il, in 2011