China vows 'forceful counter-attack' in escalating row with Britain over Hong Kong

China threatened a "forceful counter-attack" on Tuesday in response to Britain's announcement that it would suspend its extradition treaty with Hong Kong following Beijing's introduction of a national security law for the former British colony.On Monday, British Foreign Secretary Dominic Raab told parliament the extradition treaty would be suspended immediately and an arms embargo would be extended to Hong Kong.