Specialist Michael O'Mara and trader Gregory Rowe work on the floor of the New York Stock Exchange, New York City, Aug. 7, 2017 (AP photo by Richard Drew).

The revolution in shale oil production in the United States has had a major impact on global energy markets, leading to the collapse of energy prices but also limiting their vulnerability to geopolitical instability. In an email interview, Meghan L. O’Sullivan, the Jeane Kirkpatrick professor of the practice of international affairs at Harvard University’s Kennedy School, where she directs the Geopolitics of Energy Project, and the recent author of “Windfall: How the New Energy Abundance Upends Global Politics and Strengthens America’s Power,” discusses what a rebalancing of supply and demand will mean for geopolitics going forward, if a supply gap […]

Angola’s new president, Joao Lourenco, casts his vote in the election that brought him to power, Luanda, Angola, Aug. 23, 2017 (AP photo by Bruno Fonseca).

On Sept. 26, Joao Lourenco was sworn in as just the third president since Angola gained its independence from Portugal in November 1975. Unlike other post-colonial leaders in Africa, Angola’s first president, Agostino Neto, was in power for barely four years, until September 1979. In the nearly 38 years since then, Jose Eduardo dos Santos has been at the helm of the oil-rich nation. The historic handover of power, after elections in August, came as Angola finds itself in the deepest economic crisis since before its civil war ended in 2002. Even if there is not yet a political transition […]