This is misleading. There are plenty of actual war criminals in our government. What The Nation means is "convicted" war criminal. The article goes further to clarify that point. We're talking about Elliott Abrams, T-Rump's pick to be Deputy Secretary of State.
Perfect pick for State. He and Tillerson can reclaim Exxon's power all around the Globe.
...but hey, do what you want...you will anyway.
UPDATE: Damn! WaPo strikes out again!