Because John Bolton is five things U.S. President Donald Trump is not — intelligent, educated, principled, articulate and experienced — and because of Bolton's West Wing proximity to a president responsive to the most recent thought he has heard emanating from cable television or an employee, Bolton will soon be the second-most dangerous American. On April 9, he will be the first national security adviser who, upon taking up residence down the hall from the Oval Office, will be suggesting that the United States should seriously consider embarking on war crimes.

The first two charges against the major Nazi war criminals in the 1946 Nuremberg trials concerned waging aggressive war. Emboldened by the success, as he still sees it, of America's Iraq adventure that began 15 years ago last month, Bolton, for whom a trade war with many friends and foes is insufficiently stimulating, favors real wars against North Korea and Iran. Both have odious regimes, but neither can credibly be said to be threatening an imminent attack against America. Nevertheless, Bolton thinks bombing both might make the world safer. What could go wrong?

Much is made of the fact that Bolton is implacably hostile to strongman Vladimir Putin, whom the U.S. president, a weak person's idea of a strong person, admires. And of the fact that the president has repeatedly execrated the invasion of Iraq that Bolton advocated. So, today among the uneducable, furrowed brows express puzzlement: How can the president square his convictions with Bolton's? Let's say this one more time: Trump. Has. No. Convictions.