ABIDJAN, IVORY COAST — Ivory Coast announced on Tuesday that French troops will leave the country after a decadeslong military presence. It is the latest African nation to downscale military ties with its former colonial power. Ivorian President Alassane Ouattara said the pullout would begin in January. France has had as many as 600 troops in Ivory Coast. “We have decided on the concerted and organized withdrawal of French forces in Ivory Coast,” he said, adding that the military infantry battalion of Port Bouet that is run by the French army will be handed over to Ivorian troops. Outtara’s announcement