People take part in a pro-Ukrainian rally in Luhansk, eastern Ukraine (REUTERS/Vasily Fedosenko).

Opinion

Does Putin Want a War?

April 24, 2014, Steven Pifer, John Herbst and William Taylor

Three former U.S. ambassadors to Ukraine write that, in order to change Russia's calculus in Ukraine, the U.S. and Europe must immediately enact additional and more meaningful sanctions against Russia.

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