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Obama and Putin square off on Ukraine at G20 Summit

President Obama and Vladimir Putin are squaring off at the G20 Summit in Brisbane, largely over Obama’s sanctions against Russia for the country’s actions in Ukraine. NBC’s Kristen Welker reports.

President Obama and Vladimir Putin are squaring off at the G20 Summit in Brisbane, largely over Obama’s sanctions against Russia for the country’s actions in Ukraine. NBC’s Kristen Welker reports.