You cannot think straight when you’re in pain. That’s truer still when the pain is combined with fury at those who caused it. There’s a reason we speak of “blind rage”: when anger descends, we cannot see what’s in front of us. And if that’s true of individuals, it’s truer still of nations. That was the message Joe Biden brought when he travelled to Israel this week. Drawing on his own experience of multiple bereavements, he consoled Israelis grieving for the more than 1,400 civilians killed by Hamas in the 7 October massacre and those waiting for word on the...