the coltsmments wrong and unnecessary. >> reporter: mike huckabee not only sticking to his guns but looking to capitalize on the spotlight on the controversy. >> when hitler wrote, he meant it. >> reporter: doubling down in campaign videos on facebook. >> hell will freeze over before they get a nuclear weapon. >> reporter: in twitter in fundraising pitches and interviews. >> the medtaphor it should be used because iranians are threatening the murder of millions of jews. >> reporter: refusing to apologize and refusing to back down. >> i will not apologize and recan't because the word holocaust was invoked by the iranian government. >> reporter: his reference to the holocaust in kritcriticism of the iran deal. >> take the israelis and march