The question unanswered by the attorney general’s summary of Special Counsel Robert Mueller’s report is: Why? Russian President Vladimir Putin took an extreme risk by interfering in the 2016 election as he did. Had Hillary Clinton won the presidency—the most likely outcome—Russia would have been exposed to fierce retaliation by a powerful adversary. The prize of a Trump presidency must have glittered alluringly, indeed, to Putin and his associates. Why?

Did they admire Trump’s anti-NATO, anti–European Union, anti-ally, pro–Bashar al-Assad, pro-Putin ideology?

Were they attracted by his contempt for the rule of law and dislike of democracy?

Did they hold compromising information about him, financial or otherwise?

Were there business dealings in the past, present, or future?