It's Evan Thomas' observational grace notes that deliver the complete Nixon. You've got to empathize with a guy who was totally helpless with anything mechanical and was comically clumsy while wrestling a lobster that clawed onto his suit.
If Iran is developing a nuclear weapon, should they be stopped before or after they may or may not have one? This is the scary, geo-political issue of the day involving the Middle East and therefore the world.
It's sign of a corrupt political/intellectual culture that being wrong in highly consequential ways appears to have no bearing on your implicit moral standing to propound in weighty terms on the crucial issues of the day.