Venezuelans on Saturday scrambled to understand who was in charge of their country after the US military captured President Nicolas Maduro, ousting the strongman who had outlasted a botched coup attempt, several army mutinies, mass protests and economic sanctions in the vast nation of 29 million. “What will happen tomorrow?” asked Juan Pablo Petrone, a resident of Venezuela’s capital of Caracas. As fear gripped the city, streets quickly emptied save for long lines snaking from supermarkets and...