Personnel: Mariano-Florentino Cuellar at Carnegie Endowment for International Peace (President)

NoteThe source text explicitly confirms all three key fields of the record. It identifies Mariano-Florentino Cuéllar as President of the Carnegie Endowment for International Peace in the Senior Leadership section. The person name, organization, and role all match exactly (with minor spelling variation: 'Cuellar' in record vs. 'Cuéllar' in source, which is a standard accent mark difference and not a contradiction). The source is the official Carnegie Endowment leadership page, making it a highly authoritative source for this personnel information.