Questions about a Xi-Trump meeting were buried by news of a 'phased tariff withdrawal' – but what does that mean? We've also got two interviews with veteran negotiators for the US and China: reporter Yujing Liu calls in from Shenzhen after her interview with former Chinese trade envoy Long Yongtu. He tells us why he loves dealing with Trump, and hopes for a Trump 2020 victory. We also speak to Professor Larry Summers, a senior economist and veteran of the Clinton and Obama administrations, who…