Today, the First World War is remembered chiefly for the carnage of the Western Front, but at the time the Royal Navy's blockade of Germany was a more frequent source of debate. For, even at a time of war, there were influential voices in Britain who baulked at a concept of economic warfare that hindered the free passage of goods on the high seas, and brought German society to the brink of famine. To further our understanding of these issues, this...