Sri Lanka will pay $72.6 million to buy a 90,000-tonne shipment of Russian oil docked at Colombo’s port for weeks, its energy minister said on Saturday, as the island nation works to restart its only refinery and address a crippling energy crisis. Sri Lanka has struggled to pay for fuel, food and medicine imports due to a severe shortage of foreign currency. An unprecedented financial crisis has also forced the country to default on some external debt. Like the rest of Asia, Sri Lanka wants to shift to long-term crude tenders to hedge against high crude spot prices, but dwindling foreign excha…