What to know

• Vitol, the world's largest commodity trader, has locked in exclusive fuel supply agreements with at least five African countries, becoming the dominant supplier to southern and East Africa.
• The company capitalized on regional supply disruptions, particularly the Iran crisis, to secure these exclusive deals.
• The region relies almost entirely on imported fuel, making Vitol's market concentration position unusually powerful and raising questions about pricing and supply security.

Vitol Group World's largest commodity traderJack Farchy Bloomberg investigative reporterJavier Blas Bloomberg energy correspondent