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Kizza Besigye, Uganda's leading opposition leader and presidential candidate, stands outside the sunroof of a car and flashes the "V for victory" sign to supporters during an election rally in Kampala on February 10, 2016. Besigye will challenge incumbent President Yoweri Museveni for the fourth time when voters go to the polls on February 18, 2016. / AFP / ISAAC KASAMANI (Photo credit should read ISAAC KASAMANI/AFP/Getty Images)

Kizza Besigye, Uganda's leading opposition leader and presidential candidate, stands outside the sunroof of a car and flashes the "V for victory" sign to supporters during an election rally in Kampala on February 10, 2016. 
Besigye will challenge incumbent President Yoweri Museveni for the fourth time when voters go to the polls on February 18, 2016.  / AFP / ISAAC KASAMANI        (Photo credit should read ISAAC KASAMANI/AFP/Getty Images)