“This will be problematic for the United States.

We confirm that as long as nuclear weapons exist, NATO will remain a nuclear alliance, ”RIA Novosti quoted her as saying.

Earlier, Russian Foreign Ministry spokeswoman Maria Zakharova recalled evidence of Western assurances not to expand NATO eastward.

In turn, Russian President Vladimir Putin during a press conference announced deception by NATO in the issue of not expanding the alliance to the east.

The head of state said that Russia was "cheated, just blatantly deceived."