Participants of the Second UNESCO Forum on Global Citizenship Education (GCED) Building peaceful and sustainable societies: preparing for post-2015 (28-30 January 2015,UNESCO HQ, Paris) reflect on what Global Citizenship is. The Forum was organized by the Division for Teaching, Learning and Content, Education Sector, UNESCO, with the support of Austria, the Sultanate of Oman and the Republic of Korea, and the UN Secretary-General’s Global Education First Initiative (GEFI).