Asked about Trump, whom he once described as "very talented," Putin said the Republican candidate was deliberately adopting a showy style because he wanted to get his message across and that he represented ordinary voters fed up with the U.S. political elite.
"He has chosen a method to get through to voters' hearts," said Putin. "He behaves extravagantly of course, we see this, but I think there's a reason for this."
Putin dismissed suggestions by some politicians in the West that Russia is poised to attack another country or intervene elsewhere in the Middle East apart from Syria.
Such talk was designed to exaggerate the threat that Russia posed, he said, in order for certain countries to secure higher military spending and talk up their own importance.
He said Russia was not planning to attack anyone.
But he made clear Russia was in Syria for the long haul and intended to clear the city of Aleppo of what he called "a nest of terrorists", while trying to minimise civilian casualties.