[D]emocracy is not in imminent jeopardy but American liberal democracy-predicated on the rule of law, individual rights, and tolerance for dissent-does seem up for grabs in a way it has never been in my lifetime. The willful trashing of U.S. postwar grand strategy takes us anew into a world based not on a U.S.-led Western rules-based order, but on a ragged concert of great powers with zones of influence in which power-based relationships alone define relations between big and small nations. We've been there before and we're still here to tell of it-but earlier epochs of balance-of-power realism did not proceed in a world with nuclear weapons.