Does Trump shy away from offending Saudi Arabia because he has business dealings with wealthy Saudis? Or because he expects them to curry favor by patronizing his new hotel in Washington? We don’t know. By refusing to release his tax returns and by refusing to divest himself of his businesses, he raises such questions.

Another country left off the list is Egypt. Yet the leader of the 9/11 hijackers was Mohammed Atta, an Egyptian. Was Egypt omitted because Trump is developing a warm relationship with the country’s brutal dictator, General Abdel Fattah el-Sisi? Again, we don’t know.