Like in Cuba? North Korea? Iran? South Africa? You don't seem to understand Russian history all that well, or the complexities of their economy and social structure. I don't overestimate Putin's influence, if anything, I may be understating it. Using economics instead of diplomacy will have the opposite effect, it will galvanise the support for Putin further, his popularity soared after the annexation of Crimea and the incursion into Ukraine, even in the face of sanctions. Sanctions have never worked in Russia and they won't work now, imo they're being used by the Obama administration as a tool to show the public they are doing something. It's apparently working. Want to eat and have some stuff? Wounded national pride? Not even close.