Northern Ireland's problems are rooted in physical and historical geography: small resource base, peripheral location, violent conquest, repression and ruthless emargination of the native population by the Protestant settlers. At the time of partition, many areas already had a Catholic majority, and the Catholic population is increasing faster, thereby undermining the Protestant position. Britain gains no advantage by keeping Northern Ireland. Nevertheless, this solution is not going to be cheap, not merely because of opposition by Protestant loyalists, but also because of the economic...