NEW DELHI, March 14 (Reuters) – Indian Oil Corp (IOC.NS)the country’s leading refiner bought 3 million barrels of Russian Urals from trader Vitol for delivery in May, trade sources said. This is the first purchase of the strain since Russia invaded Ukraine on February 24.

Western sanctions against Russia have caused many companies and countries to shun its oil, pushing Russian crude to record price levels.

The IOC said in late February it would buy Russian oil on a delivered basis to avoid complications…