The armies of Chad and Niger launched a joint offensive against the Nigeria-based Islamist group Boko Haram. Military sources said Chadian and Nigerian forces began the offensive Sunday morning in Nigeria's northeastern Borno state.
ທະຫານ Chad ກັບ Niger ຮ່ວມກັນປະຕິບັດງານ ຕໍ່ຕ້ານ Boko Haram
![Chadian troops and Nigerian special forces observe as a U.S. special forces soldier (right) conducts a hostage rescue exercise in the Flintlock exercise in Mao, Chad, March 7, 2015.](https://gdb.voanews.com/c61e800e-7d0c-4be4-8f98-edfa9c0b1f8b_w1024_q10_s.jpg)
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Chadian troops and Nigerian special forces observe as a U.S. special forces soldier (right) conducts a hostage rescue exercise in the Flintlock exercise in Mao, Chad, March 7, 2015.
![Nigerian special forces guard a compound in a hostage rescue exercise at the end of the Flintlock exercise in Mao, Chad, March 7, 2015.](https://gdb.voanews.com/582842ba-a2f8-4bd9-ba29-a6a4bcf07d9f_w1024_q10_s.jpg)
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Nigerian special forces guard a compound in a hostage rescue exercise at the end of the Flintlock exercise in Mao, Chad, March 7, 2015.