(FILES) Chad's junta leader Mahamat Idriss Deby Itno salutes during the closing ceremony of the National Sovereign Inclusive Dialogue (DNIS) forum, in N'Djamena on October 8, 2022. (AFP)

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N'Djamena, Chad | AFP

An attack by jihadist group Boko Haram killed around 40 Chadian troops overnight near the Nigerian border, prompting an army operation