There are, after all, many hostile forces that he has had to overcome.

It also criminalises the downloading of prohibited internet content or 'sending communications of any kind to foreign hostile forces'.

They would be protected by fighter jets and other combat aircraft, while spy planes would scan the ground for any signs of enemy activity or approaching hostile forces.

Now, the letter continues, hostile forces are threatening 'our city, our nation and our workers'.

And cities, especially capitals, attract hostile forces because they provide concealment and a reservoir for recruitment, and they represent the centre of power.