What Britain's suicide means for the world

An effective foreign policy must be backed up by a military that poses a credible threat. This requires economic heft.

Vivek Kelkar, Mumbai, and Claire Berlinski, Paris

Once, Britain bestrode the world like a colossus. At the height of the Pax Britannica, the Crown presided over a quarter of the world’s population and land mass, a vast empire, in the famous words of the Anglo-Irish diplomat Lord Macartney, “on which the sun never sets, and whose bounds nature has not yet…