(This story from Aug. 24, 2012, corrects the description of the source who appears in the first paragraph. An earlier version of this story incorrectly stated that the source previously predicted North Korea’s first nuclear test in 2006. The corrected version of the description of the source appears in the 25th paragraph)
BEIJING (Reuters) - North Korea's young leader wants a state visit to China in the latest move in his push to lift the isolated state out of decades of poverty, but risks further fraying ties with his only powerful ally by sticking to the threat of a new nuclear test.