Charges of foreign power interference in the U.S. presidential election have raised grave national security concerns and touched off multiple federal inquiries that could drag on for months.

South Africa in the post-apartheid period has registered steady growth, but mounting problems over inequality threaten the continent’s economic engine.

China’s colossal infrastructure investments may usher in a new era of trade and growth for economies in Asia and beyond. But skeptics worry that China is laying a debt trap for borrowing governments…