President Muhammadu Buhari swore-in his cabinet of 36 ministers on Wednesday, bringing hope that the government can start tackling the many problems facing Nigeria – including a weak economy, widespread corruption, and security concerns brought on by Boko Haram.Buhari has said he will take on the oil minister role himself.And the situation has many wondering: If it took almost half-a-year to get this far; will Buhari and his new cabinet be able to resolve Nigeria’s economic, defence and energy problems before they get worse?