A group linked to al-Qaeda claimed Thursday’s attack on the airport of Niger’s capital, Niamey, that killed at least 11 soldiers and two civilians, six months after other jihadists staged a large assault on the sensitive site. Twenty-two attackers were also killed as security forces repelled the raid on Diori Hamani International Airport in Niamey, Niger’s defence ministry said. Gunfire erupted early in the morning and rang out for hours near the airport, where a large military presence was...