1395057307302.cachedRussia has agreed to a ceasefire in Crimea until March 21. Which gives the Obama administration four days to prevent an open war. Can anyone change Putin’s calculation in time? Now that Crimea has “voted,” the Obama administration is ready to start unveiling sanctions against Russian and Crimean leaders who are linked to what the West is calling Russia’s invasion and subversion in Crimea. But with a fragile ceasefire set to expire by Friday, the sanctions are unlikely to work in time to head off a conflict. There are signs that the short-term measures being contemplated, which include asset freezes and visa bans for Russian government officials and business leaders, will not be biting enough to really put pressure on Putin and his friends. MORE