Events in Ukraine are moving so swiftly these days that it is hard to keep up with the latest developments. On Sunday, Crimea voted to secede from Ukraine and rejoin Russia; on Monday, the U.S. and Europe imposed sanctions on several prominent Russians and Ukrainians; and on Tuesday, Russian President Vladimir Putin announced plans to make Crimea a part of the Russian Federation. A diplomatic resolution to the protests that began last fall against former Ukrainian President Viktor Yanukovych seems ever more elusive.    Against this backdrop, Knowledge at Wharton asked Sophia Opatska, CEO of Lviv Business School in Lviv, Ukraine, for her analysis of what led up to the current crisis and what lies ahead for a country now divided.    An edited transcript of the conversation follows. Knowledge at Wharton : We’re here today with Sophia Opatska, CEO of Lviv Business School, in Ukraine.…