Oil prices edge lower after closing at 4-month high - MarketWatch
1. Oil futures declined after reaching four-month highs due to supply concerns. 2. Sanctions against Russian crude exporters heighten market uncertainty. 3. U.S. crude inventories fell by 2 million barrels, exceeding analyst expectations. 4. Nearby futures show increased premiums, signaling tight market conditions. 5. Asian refining margins have turned negative, reflecting market risks.