Ban Ki-moon farewells the U-N after 10-years as Secretary General

United Nations Secretary-General Ban Ki-moon has bid a final farewell to staff on his last day in office.

United Nations Secretary-General Ban Ki-moon, poses for a selfie with one of his staff on his last day at the U-N headquarters. Source: AP, Mary Altaffer

It comes at a time when the relevancy of the UN is under scrutiny, as conflicts continue to rage around the world.