China vows to retaliate after US bans defence exports to Hong Kong over national security law

China has promised to retaliate against the United States after it moved to stop exporting defence equipment to Hong Kong because of the national security law.Chinese Foreign Ministry spokesman Zhao Lijian said the national security legislation for Hong Kong was an internal matter for China and no foreign country had the right to intervene.Zhao said China was determined to maintain its sovereignty, security and to implement the “one country, two systems” in Hong Kong and strongly opposed any…