Cellou Dalein Diallo, a prominent Guinean opposition figure living in exile, says his passport has been cancelled by Guinean authorities, preventing him from travelling to the United Nations General Assembly in New York. Diallo, who leads the Union of Democratic Forces of Guinea (UFDG), was already at the airport in Abidjan with a boarding pass when Ethiopian Airlines informed him his passport had been invalidated and refused to let him board. The move is the latest in a series of crackdowns by Guinea's military ruler Mamady Doumbouya, who seized power in a 2021 coup, dissolved the UFDG and several other opposition parties in March, and has overseen the banning of protests and the arrest or exile of numerous dissidents.