The article intends to analyze how the English School approach has examined international politics after September 11. It begins by analyzing some developments on the matter of justice that has taken place within the English School, highligning the solidarist conception of international society. Afterwards the article analyses how the English School can help us to understand some of the main challenges that unipolarity poses on international society. It emphasize the limits of an order based on imposition and drives attention to the question of legitimacy and strengthening of international institutions.
September 11; English School; Legitimacy