From the source: "Vladimir Putin’s war of aggression against Ukraine has shaken Europe and the world. The unprovoked invasion of a sovereign state is a major breach of international law to which the United States, the European Union, and allied countries reacted by imposing wide-ranging economic sanctions. Are we entering a new phase of international instability in a multipolar world? What does it mean for our historical perspective that European affairs suddenly have become urgent again for the international order? The panel will address the challenges Putin’s war against Ukraine poses for the post-Cold War order and for European security."