A country can have leverage that goes beyond how much potential it has to invade or destroy another nation.

> Last time I checked, most countries today, aside from Russia, aren't in the business of invading other countries and expanding territory

How about Israel that the UK is arming? Though in the case of the UK it is contracting.

> The UK will be just fine - it's doing as much as any other western country to keep it's relevance.

That's reassuring.