(Bloomberg) -- Europe’s oil refiners, already making do without longstanding shipments of Russian crude, are now struggling with the loss of similar supplies from northern Iraq and a shock reduction in output by several of the world’s top producer nations.Most Read from BloombergBud Light Takes the Cowardly Way OutMacron’s Push to Get China’s Help on Ukraine Is UnravelingFour Reasons Why Investors Expect US Dollar to Keep SlidingBitcoin ‘Halving’ Due Next Year Spurs Predictions of Rally in Token