As deteriorating economic conditions create still more strains upon defense spending in Britain, the Thatcher government's decision to replace the Royal Navy's Polaris submarines with Trident missiles and new submarines is coming under increasing criticism. This timely and significant book provides an important insight into London's choice between submarine-launched ballistic missiles and cruise missiles. It also includes a discussion of the British approach to NATO's long-range theater nuclear force modernization. Altogether an excellent survey of Britain's nuclear options as debated and decided within the past decade.