Venezuela’s dwindling oil exports were dealt another blow as one of India’s top refiners secured millions of barrels of Canadian crude on concern that the U.S. is poised to step up sanctions against Caracas. Reliance Industries Ltd, the owner of the world’s largest refining complex, signed a deal to purchase 2 million barrels of heavy Canadian oil a month for the next six months, according to people familiar with the situation, who spoke on condition of anonymity. Venezuela has been the third-largest supplier of crude to Reliance so far this year, according to data compiled by Bloomberg. While U.S. sanctions have all but crippled Venezuela’s oil export trade, so-called crude-for-diesel swaps between national oil company Petroleos de Venezuela SA and Asian and European refiners […]