Nigeria's external reserves just crossed $50 billion, jumping over $1 billion in just two weeks—the strongest short-term build-up this year. The reserves hit $50.81 billion on June 15, up from $49.80 billion on June 1, extending a robust $1.22 billion gain from May. This war chest reinforces the CBN's ability to defend the naira and signals improving foreign exchange inflows. The official naira rate held firm at ₦1,363.83 per dollar on the Nigerian...