Washington, Sept. 22 -- Tenuous US-China relationship is likely to remain in the background of this week's UN General Assembly as US President Donald Trump prepares to host Chinese President Xi Jinping in Washington later this week.

American and Chinese negotiators have been trying to repair their economic relationship after last year's tit-for-tat trade war and have also discussed opening communications over the risks posed by artificial intelligence.

China is the world's largest buyer of Russian crude oil, potentially putting Beijing in the crosshairs of a law signed by Trump last week that threatens heavy tariffs against Russia's biggest energy customers.

Trump has also dismissed Wall Street Journal reports that Chinese entities provi...