Angola unveiled plans to boost refining and auction oil blocks as it seeks to attract investors back to its struggling energy industry. Crude output in the southern African country dropped steeply after investment dried up during oil’s 2014-2017 crash. And despite being the continent’s No. 2 oil producer, Angola imports most of its gasoline, with its sole refinery meeting just 20% of fuel demand. President Joao Lourenco has vowed to change that. The country will “intensify the replacement of reserves in order to smooth the deep decline of oil production, ensure self-sufficiency in refined p...