The highest priority for any sovereign government is the protection of its citizens from danger – foreign and domestic. We count on our government to be watchful. It is troubling then how lax we have become since the end of the Cold War, despite the emergence of new international threats – not least those posed by the extraordinary rise of China and its ever-tightening grip on world affairs. Beijing runs the second most powerful economy in the world and is a major trading partner for Britain and America. Many jobs rely upon the huge investments it has made. China has...