swift banking system. so that gives you a sense of how serious the feud is here. i will tell you among ordinary people, among businesses, there is real fear about with this is gonna mean for the economy. i will give you an illustration. i was at a hotel in downtown moscow earlier, and the phone rang in my room, and it was the front desk asking me to settle my bill early, because they don't know if credit cards are gonna work, once these sanctions come into force. the other part of a sanctions package goes after russia's central bank, and it paralyzes some of their assets. and that may prove to be even more significant. and i'll tell you why. back since 2014, putin has been building something of a financial war chest, with the goal of propping up the rubble, the russian currency, in the event of western sanctions. but these measures make it very difficult for him to access that war chest. and it may mean that the value of the rubble just tumbles over