Chair of the SIPRI Governing Board, Jan Eliasson Panel discussion at the Opening Session Marianne Gasser, International Committee of the Red Cross Robert Glasser, Special Representative of the UN Secretary-General for Disaster Risk Reduction and Ahmed Aboutaleb, Mayor of Rotterdam Sir Bernard Hogan-Howe, Former Commissioner of Metropolitan Police, London Urban Ahlin, Speaker of the Riksdag, Carl XVI Gustaf King of Sweden, Crown Princess Victoria, Jan Eliasson, Chair of SIPRI Governing Board and SIPRI Director Dan Smith Shuvai Nyoni, African Leadership Centre Preeta Law, UNHCR and Dina Mansour-Ille, Overseas Development Institute Session on preventing violent extremism in European cities Plenary session on challenges to cities