Will the drop in the price of oil do to Putin what West couldn't?

Will the drop in the price of oil do to Putin What couldn't? Just few weeks ago,Senator John McCain said,"Russian was gas station in lieu of country".Because the Stock Market in New York and around world is tanking,and U.S teasury 10 years have interest now below 2 percent,German Government bond are below one percent the criss in Russian has gone unnotice.Currency controls won't solve the Russians problems but pain cause by the sanctions or slide in the price of oil?