New Delhi, April 20 -- Four candidates to be the next secretary-general of the United Nations will audition for the job this week, far fewer than there were 10 years ago when António Guterres was selected as U.N. chief.

Chile's former President Michelle Bachelet - one of two women and one of three from Latin America - will be the first to face ambassadors from the U.N.'s 193 member nations during a three-hour question-and-answer session on Tuesday. Bachelet will be followed by U.N. nuclear chief Rafael Mariano Grossi of Argentina.

On Wednesday, U.N. trade chief Rebeca Grynspan will take center stage in the General Assembly hall, and finally, Senegal's former President Macky Sall.

In 2016, a hotly contested race drew 13 candidates....