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McCain: Where is Obama's red line?

Sen. John McCain (R-Ariz.) on Sunday stepped up his criticism of a deal to eliminate Syria's chemical weapons. 

“Whatever happened to the president’s red line where he said if they use these chemical weapons, we will respond?” McCain asked on NBC’s “Meet the Press.”

“It’s not a matter of trust, it’s matter of whether it will be enforced or not,” McCain said. 

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