Time will tell whether new sanctions on Russia announced by the United States and European Union last week will be a game changer. The most significant development concerns oil, as the new measures go much further than previously understood to shut down ongoing exploration and production of new Russian supply. While triggered by events on the ground in Ukraine, from a policy perspective this is a catch-up action, closing loopholes and bringing market practice more in line with the harsher intent of earlier measures. As such, I view the steps as an incremental, if logical, next step in the effort to punish Russia for its actions in Ukraine. Still, compared to what some energy companies thought they would be allowed to do, the new measures look to be material in terms of their effect on ongoing exploration, development and investment in securing new oil.