North Korean leader was in delegation visiting Beijing: source

By Ben Blanchard, Shu Zhang and Christine KimBEIJING/SEOUL (Reuters) - North Korean leader Kim Jong Un was part of a secretive delegation that arrived in Beijing by train on Monday and left on Tuesday, according to a source familiar with the matter and foreign media reports.The visit, which would be Kim's first known journey abroad since he assumed power in 2011, was not announced by North Korea or China and has remained shrouded in mystery.South Korea's left-leaning Hankyoreh newspaper reported