Rumsfeld and McNamara seem to be very different kinds of people.
They couldn't be more different. But they presided over disastrous wars. That's not OK. You can be reflective, you can be remorseful, you can be really engaged by the tales of what you have done and haven't done. And McNamara realized this. There's no magic slate for any of us; we can't just pull up the acetate and it all goes away.
McNamara at least had some regrets that he was willing to share.
Rumsfeld is also willing to share the fact that he has no regrets, isn't sorry, sees nothing wrong with what he's done. In fact, he's proud of it.
Well, and I'm not sure it matters either way. If he's sorry, then fuck him. If he's not sorry, fuck him. The dead are dead. The wounded are wounded. There aren't degrees here, where if you're sorry you go to a slightly higher level of hell. Nobody cares about their immortal souls but them. To the rest of us, all that matters are the results.