Ukraine 'Tripwire' Could Blow Up in NATO's Face

When it comes to Ukraine, the U.S. should avoid military tripwires and “red lines” it is not absolutely willing to enforce. 
Photographer: Sean Gallup/Getty Images

In response to Moscow's slow-motion annexation of Crimea, some have called for the U.S. and the North Atlantic Treaty Organization to place trainers and advisers in Ukraine to act as a "tripwire" against further Russian incursions. The idea is that the risk of setting off a conflict with the West would tame Russian President Vladimir Putin's expansionism. "That is something the most rabid Soviet expansionist never risked," writes the Washington Post's Charles Krauthammer. "Nor would Putin."

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