Britain is significantly stepping up its military support in West Africa to help combat the world's fastest growing Islamist-led insurgency.
Over the past month, British troops have been helping train local forces to fight extremism in the Sahel.
The region, a semi-arid stretch of land just south of the Sahara Desert, has been a frontline in the war against Islamist militancy for almost a decade.
Later this year, 250 British soldiers will join a UN mission in Mali.
It has been described as the most dangerous peacekeeping operation in the world.
