“I hate comparing people to Hitler, but Putin’s crazy talk is making it hard to avoid,” Stephen Sestanovich comments.

“No sanctions can be proportional to Putin’s unprovoked invasion of Ukraine,” Eddie Fishman of the Center on Global Energy Policy comments, “but these sanctions will make the costs palpable.”

SIPA students organized the event just hours after Russia began its invasion earlier this week.

Luisa Palacios and Mauricio Cárdenas of the Center on Global Energy Policy co-write.

Jeffrey Sachs says NATO's handling of the Russia-Ukraine crisis isn't smart diplomacy.

"Deep ideological divisions among voters have been the norm across the region for decades, not the exception," writes María Victoria Murillo.

"A growing literature finds that nonviolence is more successful than violence in effecting political change. We suggest that a focus on this association is incomplete, because it obscures the crucial influence of ethnic identity on campaign outcomes," the paper Tamar Mitts co-authored is published in American Political Science Review.

Rajan Menon expands on the U.S.-Russia dynamic on the Russia-Ukraine crisis: "Much seems to be expected of sanctions — indeed, too much. If Putin orders a larger invasion, it’s a safe bet that he and his National Security Council have anticipated severe economic penalties from the West and deemed the steep price as something worth paying to achieve their objectives — which remain unclear — in Ukraine."

Eddie Fishman called Joe Biden’s action on Tuesday a modest first step intended as “a shot across the bow.”