U.S. intelligence officials have little comfort to offer a pandemic-weary planet about where the world is heading in the next 20 years. Short answer: It looks pretty bleak. The most certain trends during the next 20 years will be major demographic shifts as global population growth slows and the world rapidly ages. Some developed and emerging economies, including in Europe and East Asia, will grow older faster and face contracting populations, weighing on economic growth. In contrast, some developing countries in Latin America, South Asia, and the Middle East and North Africa benefit from larger working-age populations, offering opportunities for...