A cargo of Russian oil is heading for storage tanks in Ghana, a nation that exports crude itself and is on the doorstep of two regional supply powerhouses. The development suggests that traders could be scouring the market for new buyers of Russian barrels after the European Union stopped almost all seaborne imports from the country in December. The bloc’s measures made Moscow hugely reliant on Chinese and Indian purchases. The tanker Theseus arrived in Ghana’s territorial waters on Friday carrying about 600,000 barrels of Russian oil from a port in the Black Sea, according to tanker tracking data compiled by Bloomberg. Its cargo was due to be pumped into storage tanks in Tema, people with knowledge of the matter said. The last signal from the vessel was on Sunday evening, by which time unloading had not begun. Russia is under pressure to sustain its oil revenue after the Group of Seven and the European Union imposed punishing sanctions on the country’s energy i...