PARIS—French President Emmanuel Macron says that while dialogue with Russia is essential, “clear red lines” carrying possible sanctions must also be drawn with Moscow over Ukraine. Referring to a recent buildup of Russian troops on Ukraine’s border, Macron said in an interview with American broadcaster CBS News, “We will never accept new military operations on Ukrainian soil.” The West must demonstrate diplomacy and credibility in making that point, he said. “And I think after an unacceptable behavior, indeed, we have to sanction,” Macron said when asked about the possibility of sanctions. “And I think we have to define clear red lines with Russia. This is the only way to be credible.” However, he added “I think that sanctions are not sufficient in themselves, but sanctions are part of the package.” The interview aired Sunday on “Face the Nation.” It was recorded after Macron met Friday in Paris with Ukrainian President …