Russian President Vladimir Putin gestures while answering questions at a meeting of the Valdai International Discussion Club in Sochi, Russia, Oct. 19, 2017.
Russian President Vladimir Putin gestures while answering questions at a meeting of the Valdai International Discussion Club in Sochi, Russia, Oct. 19, 2017.

SOCHI, RUSSIA - Russia will respond immediately and symmetrically if the United States quits the intermediate-range nuclear forces treaty, Russian President Vladimir Putin said on Thursday.

Moscow is ready to develop new weapons systems, both nuclear and non-nuclear, in response to other countries doing the same, Putin said at a forum with scholars.