Derbyshire takes the larger view

and has a strategy to enforce it:

"So far as the jihadists elsewhere are concerned, I am happy to let them have Afghanistan, Sudan, Somalia, or any other donkey-powered dustbowl they want. They will only make these wretched places worse. I do think we should watch such jihadist states carefully, and act against them unapologetically and with major force if they look like making a nuisance of themselves."