Conceived as the principal defenders of the 1979 revolution, the Islamic Revolutionary Guard Corps has evolved into an institution with vast political, economic, and military power.

Last week’s gruesome murder of Deborah Yakubu, a home economics sophomore at the Shehu Shagari College of Education, Sokoto, comes at a time of escalating social and economic tension in Nigeria, and will most certainly raise the political stakes as the country enters electioneering season in preparation for next year’s presidential election.

Each Friday, I look at what the presidential challengers are saying about foreign policy. This week: foreign policy is AWOL in Las Vegas; Bloomberg and Warren talk about Latin America; and foreign po…