Columbia subject headings:
Harvard subject headings:
Europe--Politics and government--1989---Forecasting.
Great powers--History--21st century.
Hegemony--United States.
International organization--Forecasting.
International relations--21st century.
Twenty-first century--Forecasts
United States--History--21st century.
United States--Politics and government--21st century--Forecasting.
Western countries--History--21st century.
World politics--21st century
World politics--21st century--Forecasting
Princeton subject headings:
Europe--Politics and government--1989---Forecasting.
International organization--Forecasting.
Twenty-first century--Forecasts.
United States--Politics and government--21st century--Forecasting.
World politics--21st century--Forecasting.