Guo said China, as a “responsible nuclear-weapon state” and a permanent member of the United Nations Security Council, has maintained its long-standing nuclear test moratorium and upheld its no-first-use policy on nuclear strikes.

Trump heads to crucial meeting with China's Xi Jinping during Asia trip, promising to tackle fentanyl crisis and trade issues while criticizing Biden's border policies.

CBC News visited Taiwan’s Kinmen islands, which are just a few kilometres across the bay from the Chinese city of Xiamen. The islands have been on the frontline of hostilities between China and Taiwan for more than seven decades.

A summit between the president and Chinese leader Xi Jinping marks renewed engagement in a long-term superpower rivalry.

President Trump told reporters as he flew into Japan that he expects to have a trade agreement with China finalized by the end of his tour of Asia.

Beijing controls the processing of almost all the world's rare earths, which has given Xi powerful leverage in the ongoing trade war with Washington. Chinese export controls have choked supply of rare earths recently as the two countries try to nail down a deal spanning a range of issues, from tariffs to the sale of TikTok's US operations.

If Beijing takes action to cut the export of chemicals that make fentanyl, the U.S. would cut in half the 20% fentanyl-related levies on Chinese goods.

The Chinese coast guard has expanded its presence across the Pacific in recent years, including conducting fishery law enforcement patrols.