As globalization continues apace, lines of communications are shortening and the boundaries between nations are becoming increasingly blurred. A global perspective is adopted on an increasing range of issues and this is particularly true of economics - no single nation can truly exist in isolation. The second edition of Horst Siebert's The World Economy treats the world as a single entity, considering issues of a global economy, rather than approaching international economics from the viewpoint of any one country. The key issues that have a affected the world trade system since the turn of the millennium are very much to the fore.