U.S. President Donald Trump asserted in an interview published Friday that tariff negotiations were underway with China, but Beijing denied any talks were taking place, the latest in a series of conflicting signals over what progress was being made to de-escalate a trade war threatening to sap global growth.

BEIJING (Reuters) - China called for all "unilateral" U.S. tariffs to be cancelled on Thursday, as signs emerged that the Trump administration may de-escalate its trade war with Beijing. China also clarified it has not held trade talks with Washington despite repeated comments from the U.S. government suggesting there had been engagement.