[Voters in Africa’s most populous country and largest economy cast ballots for a new leader in the Feb. 25 Nigerian general elections. Here are answers to some essential questions about the vote]

The new U.S. aid package will reestablish a critical flow of weapons to Ukraine’s military, but the war will hinge greatly on which side can ramp up and sustain its firepower and troop numbers in the…

The annual General Assembly debate is happening at a time of cascading challenges on health, climate, and human security. Can the United Nations carve a path through?