Of course, the magnificent moral impulse, the search for truth and goodness, is only a necessary but not a sufficient condition for the successful remaking of a country. It may be enough to bring down the ancien regime, but not to overcome, in one fell swoop, a deep-seated authoritarian national political culture. The roots of the democratic institutions spawned by morally charged revolutions may prove too shallow to sustain a functioning democracy in a society with precious little tradition of grassroots self-organization and self-rule. This is something that is likely to prove a huge obstacle to the carrying out of the promise of the Arab Spring -- as it has proved in Russia. The Russian moral renaissance was thwarted by the atomization and mistrust bred by 70 years of totalitarianism. And though Gorbachev and Yeltsin dismantled an empire, the legacy of imperial thinking for millions of Russians has since made them receptive to neo-authoritarian Putinism, with its propaganda leitmotifs of "hostile encirclement" and "Russia rising off its knees."