Trump's frustration with Mnuchin rising after failed attempt to calm markets, source says
By Jim Acosta, Kevin Liptak & Donna Borak
Dow dives 600 points to below 22,000, S&P 500 enters bear market — worst Christmas Eve ever
By John Melloy & Michael Sheetz
Stocks down: Stocks slide as Mnuchin's call with bank CEOs raises eyebrows
By Alain Sherter & Irina Ivanova