Vladimir Putin has tied the West in knots over the annexation of Crimea and the destabilization of Ukraine. Those actions have won him great popularity in Russia for standing up to the West as the champion of Russian national greatness. Nevertheless, Putin is failing as a grand strategist.
After all, Russia's most serious geopolitical challenges do not lie to the West. The United States and Europe will never accept the annexation of Crimea de jure, but have already signaled their acceptance de facto.
The signature of an association agreement between Ukraine and the European Union may infuriate Putin. It may also undermine his pet project of creating a Eurasian Economic Union. It does not, however, threaten core Russian national interests.