The Republican also admitted in an exclusive interview with 7.30 that President Donald Trump sometimes made him "nervous". During a visit to Canberra, Senator McCain said Mr Putin was the "premier and most important threat, more so than ISIS". "I think ISIS can do terrible things. But it's the Russians who tried to destroy the fundamental of democracy and that is to change the outcome of an American election," he said. "I've seen no evidence they succeeded, but they tried and they are still trying to change elections. "They just tried to affect the outcome of the French election. So...