I very carefully read through this issue years ago when Christopher Hitchens came to his aid. Yeah, that Christopher Hitchens, the much later Iraq War II fanatic.

I'm not going to repeat the exercise but at the time it was a teaching moment for me, that anybody can get things wrong. I would not be surprised that he walked back his initial strongly held stance, good for him.

The Ukraine/Russia stuff though is just ridiculous, but he's old. I know (former) world class scientists who are old, and also sadly ridiculous. Terrifying when you yourself are getting old.