In the four months since the leaders of the two global superpowers last met, Xi Jinping has overseen a surge in China's trade with the world while Donald Trump has struggled with falling approval ratings at home. That shift in fortunes has tempered expectations for their summit in Washington this week, analysts say, with Xi in no rush to make concessions and Trump constrained by a costly war with Iran that has hurt both his popularity and Americans' wallets ↧ Xi rolls into Trump summit with China's trade engine roaring In the four months since the leaders of the two global superpowers last met, Xi Jinping has overseen a surge in China's trade with the world while Donald Trump has struggled with falling ​approval ratings at home.