(FILES) Senegal's Presdient Macky Sall speaks during the High-Level Segment for Heads of State and Government session at the United Nations climate summit in Dubai on December 1, 2023. The four candidates vying to succeed UN Secretary-General Antonio Guterres will undergo public hearings this week, a preliminary step before selecting the person who will lead THE organization in the midst of a crisis. Chile's Michelle Bachelet, Argentina's Rafael Grossi, Costa Rica's Rebeca Grynspan, and Senegal's Macky Sall will each face three hours of questioning on April 21 and 22, 2026 from the 193 member states and representatives of civil society. (Photo by Karim SAHIB / AFP via Getty Images)