Isn't this up to the Afghan government, and not Blair?

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There can be no bystanders in the battle for survival. Anyone who will not fight by your side is an enemy you must crush.

We are at war with forces too terrible to comprehend. We cannot afford mercy for any of its victims too weak to take the correct course. Mercy destroys us; it weakens us and saps our resolve. Put aside all such thoughts. They are not worthy of those in the service of country.