In March, Niger suspended its military cooperation with the US after leaders severed ties with France last year.
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Since the repeal of an anti-migration law last year, migrants and smugglers have flocked back to the city.
Violence in the region has worsened since coups in Niger and its neighbours Mali and Burkina Faso.
Al Jazeera’s Nicolas Haque recounts events leading up to Senegal’s presidential polls and how some hope for a miracle.