Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: Joe Biden and Donald Trump remain locked in a tight contest where third-party candidates could deci…

The new coronavirus has led to a slowdown in economic activity in China and East Asia more broadly. The global price of oil has now fallen to $53 a barrel. This is beginning to affect the oil-exporting countries of Africa. According to Africa Confidential, three-quarters of Nigeria’s and Angola’s oil production ear-marked for export in April is unsold. Similar deficits are reported from Chad, Republic of Congo, and Gabon.

During his thirty-seven years in power in Zimbabwe, he committed virtually every human rights violation there is. His hands were awash in the blood of Zimbabweans. Fanning and exploiting racial and class differences, he destroyed the country’s economy, once on the cusp of being one of Africa’s most developed, driving out commercial white farmers. By the time he died, Zimbabwe was an international pariah, an economic basket case, and many or most of the country’s most educated and productive citizens had left the country.

It’s happened several times before: geopolitical tensions between Saudi Arabia and Russia have led to a dramatic drop in oil prices in years past. But the breakdown in Saudi-Russian cooperation in oi…