Six-party talks on scrapping North Korea’s nuclear arms have resumed but Pyongyang, emboldened by its first nuclear weapons test in October, looks unlikely to compromise. China, which is hosting the negotiations, remains optimistic. “I sincerely hope that all delegates can demonstrate political wisdom, resolve and courage,” said Beijing’s head delegate Wu Dawei. As well as China, South Korea, Japan, Russia and the United States are talking to Pyongyang. It has been warned by Washington’s representative Christopher Hill that it faces a stark choice.