Senior U.S. and Chinese negotiators meet in Stockholm on Monday to tackle longstanding economic disputes at the centre of a trade war between the world's top two economies, aiming to extend a truce keeping sharply higher tariffs at bay.

Officials are meeting in Sweden for their third round of talks in as many months, ahead of an Aug. 12 deadline, to try to avoid a flare-up in trade tensions.

US and Chinese officials are meeting Monday to extend their tariff detente beyond a mid-August deadline, and haggle over other ways to further defuse trade tensions.