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.

Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: Donald Trump has chosen to stand aside as the House of Representatives moves to vote on aid to Ukra…