Fresh fears over Middle East tensions cast cloud as energy leaders meet in Calgary

Worries over escalating tensions in the Middle East and their potential to cause oil price disruptions hung over day one of a major energy sector conference in Calgary. On Tuesday, Israel's military said Iran had fired missiles into the country. Earlier in the day, a senior U.S. administration official warned of "severe consequences" should a ballistic missile attack take place. Global oil prices jumped on the news — the price of U.S. benchmark West Texas Intermediate was up nearly fi