Tensions between President Yushchenko and Prime Minister Tymoshenko came to a head in September, and the Orange parliamentary coalition broke up. What does this mean for Ukraine's political future, and for its ability to meet its key foreign policy challenges?

Steven Pifer is a visiting fellow at the Brookings Institution and a (non-resident) senior adviser with the Center for Strategic and International Studies. A retired Foreign Service officer, his more than 25 years with the State Department focused on U.S. relations with the former Soviet Union and Europe, as well as on arms control and security issues. His assignments included deputy assistant secretary of state in the Bureau of European and Eurasian Affairs (2001-2004), ambassador to Ukraine (1998-2000), and special assistant to the president and National Security Council senior director for Russia, Ukraine and Eurasia (1996-1997). He also served at the U.S. embassies in Warsaw, Moscow and London, as well as with the U.S. delegation to the Intermediate-Range Nuclear Forces negotiations in Geneva. He holds a B.A. in economics from Stanford University, where he later spent a year as a visiting scholar at Stanford's Institute for International Studies. He is a member of the Council on Foreign Relations.

This event is jointly sponsored by the Forum on Contemporary Europe and the Center for Russian, East European and Eurasian Studies.