Brooke Sutherland, Bloomberg Opinion industrials columnist, on her new column: "Want Ventilators? Roll Back Trump’s Tariffs." Meghan L. O’Sullivan, Professor of International Affairs at Harvard’s Kennedy School, former National Security Council advisor, and a Bloomberg Opinion columnist, discusses the oil market plunge, and the Russia-Saudi relationship. Peter Andersen, Founder of Andersen Capital Management, LLC, on how to keep sane in the market sell-off. Ira Jersey, Chief US Interest Rate Strategist for Bloomberg Intelligence, and Bloomberg stocks editor Dave Wilson, discuss the Fed enhancing swap lines with central banks, and today's market drivers.