China has detained an American seismologist who tracks nuclear tests for nearly two years on espionage charges, his family revealed, saying Donald Trump's direct appeal for the scientist's release to his Chinese counterpart Xi Jinping went unanswered

WASHINGTON: A Chinese-born American seismologist who has published US-funded work on detecting North Korean nuclear tests has been detained in China for nearly two years and faces…

The case of Youlin Chen, reported here for the first time, adds an irritant to the tense relationship between the nuclear-armed rivals as Trump seeks to keep the relationship…