Behind the ”accidental” drone attack in Nigeria

At least 85 civilians have been killed in Kaduna state, north-west Nigeria, in a drone attack. The incident took place during a religious celebration on Sunday, according to the local emergency management authority. President Bola Tinubu says it was a "bombing mishap". So what went wrong? And has something like this ever happened before?

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And we meet Jennifer Uchendu, one of the inspiring women on this year's 100 Women list.