Today’s news from Ukraine is grim. It’s increasingly clear that Putin believes he has an opportunity to move in the Crimea, and perhaps to take eastern portions of Ukraine for Russia, while destabili…

Putin’s invasion of Ukraine is a geopolitical earthquake that will cause repercussions far beyond Europe. But the Russian president might be planting the seeds for the demise of his regime by overrea…

U.S. officials have preserved NATO unity in the face of Russian military threats, but they have not yet defined a clear negotiating agenda—or put Moscow on the rhetorical defensive.