Latest: Rex Tillerson sacking shows how unstable Trump administration is, says leading Democrat

Latest:Leading Democrat Chuck Schumer has said the sacking of Secretary of State Rex Tillerson shows how unstable the Trump administration has become.

Update 3.47pm: Leading Democrat Chuck Schumer has said the sacking of Secretary of State Rex Tillerson shows how unstable the Trump administration has become.

The Senate Minority Leader said he hoped CIA Director Mike Pompeo will "turn over a new leaf" as secretary of state and toughen policies toward Russia and its president, Vladimir Putin.