OPEC+ talks ended in dramatic failure, signaling the possible end of a diplomatic alliance between Saudi Arabia and Russia that has underpinned crude prices and changed the balance of power in the Middle East.

Oil deepened a three-day rout as panic over a coronavirus outbreak in the U.S. gripped investors and sent shockwaves through commodity, equity and debt markets.

Oil extended its rebound above $50 a barrel as tentative signs that Asia’s coronavirus may be easing spurred speculation that the worst of crude’s sell-off could have passed.

Oil traders and sellers are making more inquiries for supertankers to hoard crude at sea in the latest indication of the crushing impact the coronavirus is having on demand in the world’s biggest importer.

Canadian crude rebounded from a one-year low after inventories fell and Alberta’s premier pledged to defend prices.

Though oil slid to an eight-week low, the drop was tempered by an unexpected decline in U.S. crude inventories and as the World Health Organization opted against declaring the virus a global health emergency.

Canadian shipments of crude by rail are poised to surge next year, spurring investment in new export infrastructure.

RIYADH, Saudi Arabia — Saudi Arabia’s oil company Aramco gained 10% in its first moments on the stock market Dec. 11 in a dramatic debut that held until closing and pushed its value up to $1.88 trillion, surpassing Apple as the largest listed company in the world.

Alberta took a step toward easing the pain of its crude-production caps by allowing oil companies to exceed output limits if they ship the extra production by rail.

Petroleos Mexicanos’ head of crude oil trading Victor Briones and two other executives left the company amid a conflict over an external review of the nation’s crude price formulas, people familiar with the matter said.