The bestselling author of Battle Hymn of the Tiger Mother , Yale Law School Professor Amy Chua offers a bold new prescription for reversing our foreign policy failures and overcoming our destructive political tribalism at home Humans are tribal. We need to belong to groups. In many parts of the world, the group identities that matter most - the ones that people will kill and die for - are ethnic, religious, sectarian, or clan-based. But because America...