On the U.K and the sun never setting on her soil, in my humble opinion, has long ago learned her lesson as far as empire building is concerned. As did the Romans. Empires that span the globe WILL eventually falter and fail. Too big, too hard to defend, too hard to administer effectively. HOWEVER; That said, anyone who underestimates the u.k.'s strength, or ability to project power, I think would have a rude awakening. Let's also remember that there are still 53 countries included in the commomwealth. Not exactly an empire like in her hayday, but still respectable...