This report assesses the annexation of Crimea by Russia (February–March 2014) and the early phases of political mobilization and combat operations in Eastern

In February 2014, Russia initiated a war in Ukraine, its reasons for aggression unclear. Each of this volume's authors offers a distinct interpretation of Russi

How will Russia redraw post-Soviet borders? In the wake of recent Russian expansionism, political risk expert Agnia Grigas illustrates how—for more than two d

"Crimea's multiethnicity is the most colorful and politically relevant expression of Ukraine's regional diversity. History, memory, and myth are deeply inscribe

In this new Brookings Marshall Paper, Michael O'Hanlon argues that now is the time for Western nations to negotiate a new security architecture for neutral coun