International Economics: Theory and Policy, Global Edition, 12th Edition by Paul R. Krugman, Maurice Obstfeld, and Marc Melitz provides a balanced introduction to international trade and international finance, combining economic theory with real-world policy applications. The book covers comparative advantage, trade models, economies of scale, multinational firms, trade policy, exchange rates, balance of payments, monetary systems, financial globalization, currency areas, and economic growth and crises in developing countries. This edition incorporates updated discussion of major global economic developments, including lessons from the COVID-19 pandemic and its effects on trade, finance, and policy. Designed for students studying economics, international business, finance, and related subjects, it helps readers understand how countries interact through trade and financial markets and how economic policy decisions influence the global economy.