The Sec-Gen of the UN is there as a servant of the UN, he has no mandate in his own right. He can cajole, persuade or rant but at the end of the day he has no intrinsic power. Where member countries do not want to co-operate he can do nothing, where a country invokes it's veto he can do nothing, where a country ignores the UN and does it's own thing he can do nothing. In the current polarised world the occupant of the post doesn't matter, until a new consensus emerges any Sec-Gen will appear inept, corrupt or incapable and the UN will be equally irrelevant.

All the best

Oggie