MOSCOW, August 22. /TASS/. The upcoming election to the State Duma will reaffirm the country’s sustainability, Russian President Vladimir Putin said, addressing a congress of the United Russia party on Saturday.

"I am adamant that the upcoming election will reaffirm the nation’s sustainability, the maturity of our political system and its ability to counter any external threats, blackmail or aggression," the head of state said with confidence.