most important provider of energy, so, it can retaliate here, too. we haven't really heard much talk about sanctions targeting russian oil and gas exports, but russia could itself choose to limit those exports just as we're still in the winter, at the tail end of winter in europe. but russia has really prepared for this moment. ever since 2014, putin has made it a priority to kind of sanction's proof his economy. one of the things we heard yesterday during that hour-long choreographed security council meeting that putin had was his prime minister saying we are ready. we'll see. the russian stock market is obviously down very strongly other the last couple days. the ruble has drastically weakened against the dollar, but there still seems to be a confidence in the kremlin that they can weather this economically. >> angela, anton is talking about the economic cost in