Ten years after Britain’s decision to leave the European Union, it is telling that none of the leading campaigners for Leave will hail it as a success, says Michael Heseltine A ll over the world, people are dying in conflicts that reflect the most unattractive of human motivations: the hunger for power, greed and racialism. They used to be characteristic of the lives of our forebears on these islands and on the continent itself. Then the scale of human slaughter grew ever larger, culminating in