It's always a difficult time to be secretary general.

Young people should be at the forefront of global change and innovation. Empowered, they can be key agents for development and peace.

The [UN Security Council] P5 ought to be dissuaded from using their veto power, which can paralyze the United Nations. The country blocking action ought to have to explain its decision and propose an alternative solution. It has been suggested that a veto only becomes effective if the vetoing state has the support of two or three other permanent members.

In the past we could afford a long gestation period before undertaking major environmental policy initiatives. Today the time for a well-planned transition to a sustainable system is running out. We may be moving in the right direction, but we are moving too slowly. We are failing in our responsibility to future generations and even the present one.

The report produced by my commission, the Global Commission on Elections, Democracy and Security, in 2012 showed the corrosive impact of money in US politics, for example, which undermines the legitimacy of the democratic system in citizens' eyes. Such perceptions partly explain the rise of a phenomenon like the success of Donald Trump.

We're all human. After 10, 15 years you get tired, you run out of steam and ideas, you have to give a chance to somebody else. And whether you yourself are inclined to stay on, all those around you are pushing you to stay on for what they will gain.

However much one tries to suppress the will of the people they eventually will have the last word.