In all these cases, part of the reasons for failure perhaps was not analyzing and assessing the true nature of the crisis, the resources that would be required, and exaggerated expectation of what the U.N. troops can do.

On this International Day of UN Peacekeepers, let us pay tribute to the men and women from countries across the world who serve selflessly, tirelessly and fearlessly in UN peacekeeping operations. Let us remember the heroes who have laid down their lives in lands far from their own in the service of peace. And let us reaffirm our commitment to building a world free from the scourge of war.

The past year's natural disasters have highlighted the invaluable contributions of volunteers in our communities. They have volunteered their time, energy and skills to save lives and to rebuild communities. In this they joined countless people around the world who volunteer every day in response to 'silent crises'. These often unsung heroes understand all too well that poverty, disease and famine are just as deadly and destructive as earthquakes, hurricanes and tsunamis.

Contrary to popular belief, we do not face a choice between economy and ecology, It is often said that protecting the environment would constrain or even undermine economic growth. In fact, the opposite is true: unless we protect resources and the earth's natural capital, we shall not be able to sustain economic growth.

Microfinance recognizes that poor people are remarkable reservoirs of energy and knowledge, posing an untapped opportunity to create markets, bring people in from the margins and give them the tools with which to help themselves.

As we move forward, you cannot resolve the potential food crisis or shortages without science being part of the solution. Science has to be part of the solution but African governments - and these are decisions for governments, whether they embrace or do not embrace genetically modified food - and for the moment, most African companies do not accept genetically modified seeds.

I am often asked what can people do to become a good global citizen? I reply that it begins in your own community.