We just wrapped up the UN Town Hall, the next Secretary-General. The stakes are high. Six candidates and why they're the best person for the top job.This is what they had to say. >> Our responsibility is to make the UN relevant again, to deliver, to touch the hearts and souls of people on the ground, to serve people on the ground, and and not to confuse activity with impact. >> Well, I believe moral authority is always needed.>> And you always need to speak out on the issues where violations of human rights ...