The contest for UN secretary-general is about neither vision nor the best resume, language skills, administrative ability, or even personal charisma. It is a political decision, made principally by the Permanent 5 members of the Security Council. The result is that the "least unacceptable" candidate gets the job.
Not surprisingly, governments and civil societies at the sharp end of these missions -- especially in Africa, the Americas and Asia -- are demanding a greater say in decisions that affect them. Questions of international peace and security are frankly too important to be decided by five countries alone.