"From the very beginning, Americans have exhibited a taste for expansion, an appetite for empire. One..." — Linda Colley

Globalisation is not remotely new; it has been occurring, at differing rates and with differing degrees of scale, for centuries.

Embarking upon war is always dangerous for national leaders because it makes them more than ever at the mercy of events. When domestic opinion is acutely divided, however, war can be politically lethal for its makers.

Look at how the British covered India with railroads, and it is easy to view them as modernisers. Look, however, at the abysmal levels of mass illiteracy in the subcontinent they left behind in 1947, and they appear rather differently.

British prime ministers and prime ministers' spouses and children are together becoming ever more like first families. They need to be given sufficient resources and personnel to enable them to carry out their shifting roles efficiently, decently, and safely.