Oil prices climbed more than 1 percent on Thursday due to a threatened strike in Nigeria and as traders cover shorts after sharp losses the previous day brought on by an unexpectedly large rise in U.S. stocks of refined fuels. “Short covering in the market, together with the threat of a strike by Nigeria’s key oil union, has provided some support to oil prices in today’s session,” said Abhishek Kumar, senior energy analyst at Interfax Energy’s Global Gas Analytics in London. Sponsored One of Nigeria’s two main oil unions threatened to launch a nationwide strike from Dec. 18 over what it said was a “mass sacking of workers that joined the union.” The country is Africa’s top oil exporter. Brent futures […]