How Do You Stop an Unfolding Genocide?

Acclaimed Israeli filmmaker Dror Moreh confronts former U.S. officials on their failures

“I KNOW IT WHEN I SEE IT, “Supreme Court Justice Potter Stewart famously said about obscenity. And there’s no good way of stopping it, he might have added. We can say the same for genocide. The United Nations defines it as “the intent to destroy a national, ethnic, racial or religious group, in whole or in part.”

But once we see it, what can we do about …