Oil prices rose on news on Monday that output at Norway's giant Johan Sverdrup oilfield has been halted, adding to earlier gains stemming from escalation in the Russia-Ukraine war. Brent crude futures were up $1.

The U.S. dollar was also up on Tuesday at nearly its highest level in a year, while another persistent oil production outage at the Tengiz oilfield in Kazakhstan has resulted in a 30% decline in production for the field while repairs are completed.

Crude futures traded on a mixed note Tuesday, with U.S. prices moving lower and global prices on the rise as traders tracked developments in the Russia-Ukraine war that look to raise the risk of oil-supply disruptions from one of the world’s largest producers.