91热爆

The US Secretary of State, Rex Tillerson, arrives in China later today for the final leg of his tour of East Asia. The tour has been dominated by anxieties over North Korea's nuclear and ballistic missile programmes.

Speaking in Seoul on Friday, Mr Tillerson warned Pyongyang that a military response would be on the table if it threatened South Korea or US forces. President Trump tweeted that North Korea was "behaving very badly" and that China, its main ally, had done "little to help".

Carrie Gracie, our China editor, tells Nick Robinson that the strategic rivalry between the US and China prevents the two countries from "uniting against a common threat."

Gary Locke, former US ambassador to China discusses how the Chinese government "will not take kindly" to President Trump's tweet and Tillerson's language in Seoul "isn't helpful."

(Image: Chinese Foreign Minister Wang Yi and US Secretary of State Rex Tillerson holding a joint press conference at Diaoyutai State Guesthouse; credit: Getty Images)