Managing director of the International Monetary Fund Christine Lagarde speaks with Gerard Baker at The Wall Street Journal CEO Council Monday. Ralph Alswang for The Wall Street Journal WASHINGTON—International Monetary Fund chief Christine Lagarde on Monday said falling oil prices will help boost economies in the U.S. and across much of the globe, a net positive for a world struggling with slowing growth. “It is good news for the global economy,” Ms. Lagarde said at The Wall Street Journal CEO Council annual meeting. Oil prices tumbled to multiyear lows last week after the Organization of the Petroleum Exporting Countries decided to maintain its production quotas, rather than lowering its output target. Lower oil prices are good for most consumers, who pay less for gasoline, but could squeeze energy companies and the economies of […]