"We are in one of those dangerous periods of history when things can go terribly wrong. The break-up of Great Britain would encourage all the forces of chaos, terrorism and aggression and set a terrible precedent. Separatists in Europe would ramp up their campaigns exponentially, which would vastly increase political turmoil on a continent that is already becoming vulnerable to the kinds of political extremism we once thought had been extinguished in the ashes of the Second World War."