Oil falls as concerns about demand amid US tariff upheaval return
Brent crude futures slipped 97 cents, or 1.4%, to $66.99 a barrel at 0640 GMT after closing up 3.2% on Thursday

Brent crude futures slipped 97 cents, or 1.4%, to $66.99 a barrel at 0640 GMT after closing up 3.2% on Thursday