from pursuing this aggressive behavior? this is a really big and important question, boris, and i m really glad that you asked it. the answer is, we simply at this point don t know. we know that since 2014 and those sanctions were imposed, as you said n a slightly tepid fashion upon people close to the kremlin and politically and economically as well, that they had a limited impact initially the thinking would be that while russia is essentially a dollar linked economy, a commodity based economy, exports oil, so if you could in a certain way extricate its ability to access the dollar banking system that would have a big impact on the kremlin. what essentially it did is it allowed certain sanctioned individuals to trade in other dollar proxy assets influencing other parts of the world, et cetera. so what they would have to do here would be something much bigger than last time. they would have to cut them out