The UN is used to mostly dealing with governments, which represent member states, but they no longer monopolize power. That's why Secretary-General António Guterres says he also wants the private sector, cities, civil society, and especially youth to have a voice. In fact, young people make Guterres feel optimistic about the future, and he hopes that they'll continue waking up political leaders as citizens of the world.

Watch this episode of GZERO World with Ian Bremmer: UN Sec-Gen: Without trust, catastrophe awaits