Will the U.S.-Saudi Arabia Relationship Ever Reach a Breaking Point?
By Keith Johnson & Robbie Gramer
U.S. oil plunges 25%, Brent falls below $20 a barrel
By Stephanie Kelly
Oil plunges 25%, extending recent losses as storage fills
By Pippa Stevens
US crude prices tumble as world's largest oil ETF cuts stake
By Philip Stafford & Harry Dempsey
Who wins and who loses when oil prices fall?
By Dharshini David