Russia's inclusion in an expanded G7 would run contrary to the group's aims and interests.

Nigerian society and political behavior at all levels usually is shaped by patronage and clientage networks. Politically, there are few genuinely independent voters, in the sense that voters in, say, Vermont or Switzerland are completely free to vote for whomever they like. Clients usually vote as their patrons wish, and nearly everybody is both a patron and a client, from the top of society to rag pickers at the Lagos dump. 

Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: China’s effort to solve its economic woes by doubling down on exports is creating a policy challeng…