China is biggest state threat to our economic interests, says UK PM Sunak

China represents the "biggest state threat to our economic interests", British Prime Minister Rishi Sunak told NBC Nightly News in an interview that aired on Monday. "It's a systemic challenge for the world order," he added.

Sunak was in San Diego alongside his Australian counterpart and U.S. President Joe Biden to unveil details of a plan to provide Australia with nuclear-powered attack submarines.