The text discusses the debate between realism and liberalism in international relations today. It explores the perspectives and principles of both theories, highlighting their achievements and shortcomings. Realism emphasizes the power struggle and self-interest of states, providing explanations for current world events such as the formation of alliances and arms races. On the other hand, liberalism focuses on international cooperation and the establishment of institutions to maintain peace, but faces challenges in addressing certain global issues. While realism is criticized for being pessimistic, it remains relevant in explaining state behavior during global crises. In conclusion, the text argues that realism offers timeless wisdom in understanding international relations.

• The text discusses the debate between realism and liberalism in international relations today, highlighting their perspectives and principles.
• Realism emphasizes the power struggle and self-interest of states, providing explanations for current world events such as the formation of alliances and arms races.
• Liberalism focuses on international cooperation and the establishment of institutions to maintain peace but faces challenges in addressing certain global issues.
• Realism is critiqued for being pessimistic but remains relevant in explaining state behavior during global crises.
• The text concludes that realism offers timeless wisdom in understanding international relations.