Niger's army chief has been fired after two major attacks left 160 soldiers dead and dozens of others wounded, the government announced.
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That attack on the Chinagrodrar Advanced Military post came less than a month after another on a military garrison in Inates that killed 71 soldiers and raised questions about Niger's ability to contain the spread of armed groups across its western border from Mali and Burkina Faso.
Niger said it would launch a new military offensive against armed groups, but past campaigns have failed to curb violence despite the presence of French and US troops.
Attacks in Niger have risen fourfold over the past year, killing more than 400 people, according to the Armed Conflict Location & Event Data Project, a non-profit research organisation.
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In addition to ISIL attacks, countries in the region, especially Mali and Burkina Faso, have struggled to cope with deadly ethnic clashes between rival farming and herding communities.
Niger is part of a five-nation task force known as the G5, set up in 2014 with Burkina Faso, Mali, Mauritania and Chad.
The conflict has since spread to the centre of Mali and to neighbouring Burkina Faso and Niger. Attacks continue, despite France deploying 4,500 troops in the region as part of Operation Barkhane to help local forces.
Meanwhile on Monday , France and the five West African states agreed to combine their military forces under one command structure to fight a growing battle in the Sahel region, with Paris committing an extra 220 troops. Al Jazeera and news agencies
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