Reporters Without Borders has expressed concern at the tough line that Niger’s authorities have begun taking with journalists, arresting four in Niamey in the past five days. Zakari Adamou, the host of a talk show on privately-owned Canal 3 TV, and Ousmane Dan Badji, the editor of the newspaper L’Union, who was a guest on Adamou’s show, were summoned for questioning by the police yesterday...