What does this advice in military terms amount to? Dig lots of trenches - and "martyr operations". "Wow, we'd never have thought of that if he hadn't said so" the people being addressed must be saying.

The main effect of this tape is to play into the hands of those who are determined to make war. It could be expected to generate support and undermine opposition, and it is timed precisely to achueve that effect.

And if there are any major terrorist attacks in the next few days, the same will be true of them, and I am sure that would be their aim.

Why do people seem so reluctant to try to think beyond the next move? This is chess, not conkers.