<sod >US President Donald Trump has said thatÃÂÃÂ "the Chinese envoy, who just returned from North Korea, seems to have had no impact on Little Rocket Man," in reference to leader Kim Jong-un.< eod>< sod > "The Chinese envoy, who just returned from North Korea, seems to have had no impact on Little Rocket Man," Mr Trump tweeted, referring to this nickname for Mr Kim.< eod>