I had great admiration for the election of President Obama. I believe that the U.S. at that moment showed tremendous capacity to show that it is a great nation, and it surprised the world. It may be very difficult to be able to elect a black president in the U.S. - as it was very difficult to elect a woman president in Brazil.
The current generation of world leaders -- our generation -- is also being called to face significant challenges concerning peace, collective security and the environment. We have been unable to solve old disputes and to prevent new threats. The use of force is incapable of eliminating the underlying causes of conflict.