When London’s Genel Energy PLC decided last year to search for oil in Somalia, it didn’t negotiate with the country’s internationally recognized government in Mogadishu. Instead, Genel Chief Executive Tony Hayward flew to a city about 500 miles north: Hargeisa, the dusty capital of breakaway Somaliland. He visited the separatist president at home and told the resources minister that Genel could spend about $100 million prospecting there. “We will find oil,” said Mr. Hayward at the July 2012 meeting, according to him and the resources minister, Hussein Abdi Dualeh. Somaliland gave Genel permission to prospect. Mr. […]