It didn't even seem like a good plan at the time

Putin's Export Machine Rolls Right Over Sanctions, Outcry - Bloomberg

"Economic sanctions from the U.S. and European Union haven’t dimmed demand for what Russia can sell even as price increases betray investors’ anxiety over future supplies. Any plan to pinch the country’s trade to punish Putin for his March annexation of Ukraine’s Crimea peninsula would have to overcome Europe’s dependence on Russian gas and China’s appetite for the country’s metals."