New Delhi, Jan. 19 -- Junta leader Gen. Mamadi Doumbouya was sworn in Saturday as president of Guinea after he overwhelmingly won last year's presidential election despite an earlier promise not to present himself as a candidate.

Doumbouya took power in a 2021 military coup and has run the country with an iron fist. In December, he won the presidential election, which was held under a new constitution that revoked a ban on military leaders running for office and extended the presidential mandate from five years to seven years. Doumbouya was accused by critics of clamping down on opposition and dissent.

On Saturday, Doumbouya took the oath of office in a brand-new 55,000-seat stadium located in the suburbs of Conakry, the capital, before...