ABUJA—The United States should consider moving its military headquarters overseeing Africa to the continent, from Germany, to better tackle growing armed violence in the region, Nigerian President Muhammadu Buhari said on Tuesday. Nigerian security forces face multiple security challenges including school kidnappings by armed gangs in its northwest and piracy in the Gulf of Guinea as well as the decade-long insurgency by radical Islamic terrorists Boko Haram, which also carries out attacks in neighboring Niger, Cameroon, and Chad. West Africa’s Sahel region is in the grip of a security crisis as groups with ties to al-Qaeda and the ISIS terrorist group attack military forces and civilians, despite help from French and United Nations forces. Buhari, in a virtual meeting with U.S. Secretary of State Antony Blinken on Tuesday, said U.S. Africa Command (AFRICOM), should be relocated to Africa itself. “Considering the growing security challenges in West and Central Africa, Gulf …