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Ban Ki-moon, Freedom Lecture at Leiden University
28 Aug 2013 -  United Nations Secretary-General Ban Ki-moon spoke at Leiden University on the theme of freedom, and he gave a message to all world leaders: “Listen. Listen to the concerns, demands and hopes of your people. If you do not listen to your people, you will hear from them – in the streets, in the squares, or most tragically on the battlefield.”