China has bought at least 7.25 million tonnes (8 million tons) of US soybeans this year, according to people familiar with the matter, putting the world’s top importer on track to meet a pledge it made two months ago as part of an apparent trade truce with Washington. State-owned buyers have continued to book US cargoes into late December, the people said, asking not to be named as they are not authorised to discuss the purchases. That extends a buying spree that began in October and maintains a...