Brent crude on Friday extended sharp gains from the previous day following attacks on two oil tankers in the Gulf of Oman that stoked concerns of reduced crude flows of the commodity through one of the world’s key shipping routes. The attacks near Iran and the Strait of Hormuz pushed oil prices up as much as 4.5% on Thursday, putting the brakes on a slide in prices in recent weeks over concerns about global demand. U.S. crude It was the second time in a month tankers have been attacked in the world’s most important zone for oil supplies, amid rising tensions between the United States and Iran. Washington quickly blamed Iran for Thursday’s attacks, but Tehran denied the allegation. […]