From Craig Murray
How the system works was outlined 100 years ago by the Liberal economist J.A.Hobson in his great book Imperialism – A Study. Written at the greatest extent of the greatest formal Empire the World has yet seen, Hobson proved, counter to the prevailing wisdom of both supporters and opponents of Empire, that the Empire had cost Britain money, not been a gain at the expense of the colonies. But while the net effect had been to make Britain poorer, the redistributive effect had made the ruling class, military and arms manufacturers much richer, at the expense of everyone else.
Moon of Alabama found an instructive quote from Hobson.
The adoption of Imperialism thus serves the double purpose of securing private material benefits for favoured classes of investors and traders at the public cost, while sustaining the general cause of conservatism by diverting public energy and interest from domestic agitation to external employment.
War and imperialism makes the ruling class wealthier while also keeping the populace nervous about their jobs and scared of outside threats. Sound familiar?