Alexej Navalny: The West should freeze the financial assets and seize the proporty of Putin's cronies

Russian opposition leader Alexey Navalny, now under house arrest, knows what kind of sanctions would hurt Putin and his cronies:  

Western nations could deliver a serious blow to the luxurious lifestyles enjoyed by the Kremlin’s cronies who shuttle between Russia and the West. This means freezing the oligarchs’ financial assets and seizing their property.

Such sanctions should primarily target Mr. Putin’s inner circle, the Kremlin mafia who pillage the nation’s wealth, including Gennady N. Timchenko, head of the Volga Group; Arkady and Boris Rotenberg, influential businessmen and former judo sparring partners of Mr. Putin; Yuri V. Kovalchuk, a financier believed to be Mr. Putin’s banker; Vladimir I. Yakunin, president of Russian Railways; the oligarchs Roman A. Abramovich and Alisher B. Usmanov; and Igor I. Sechin and Aleksei B. Miller, the heads of Rosneft and Gazprom, respectively.

The sanctions must also hit the oligarchs whose media outlets parrot the regime lines, and target Mr. Putin’s entire “war cabinet”: the TV spin doctors, compliant Duma members and apparatchiks of Mr. Putin’s United Russia Party.