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U.S. Republican presidential candidate Senator Marco Rubio (R-FL) listens to a question at the Council on Foreign Relations in New York May 13, 2015. (Photo by Shannon Stapleton/Reuters)
Rachel Maddow

Rubio weighs in on possible Russian conflict

The prospect of a hot war between the U.S. and Russia is right up there among the scariest international prospects on the planet. Marco Rubio disagrees.

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