Oil prices head for second weekly rise as U.S. vows to turn up economic pressure on Iran

Crude prices were slightly lower early Friday but on course for a second consecutive weekly gain as the U.S. vows to mount the "toughest sanctions in history" against Iran. U.S. Treasury Secretary Scott Bessent told CNBC that meant a return to large-scale military combat was "unlikely," but markets are now "pricing in the failure of diplomacy," an analyst told CNBC.