On Friday, the Russian Information Agency quoted Foreign Minister Sergey Lavrov as saying that he does not expect to extend the "New Start" treaty between Russia and the United States on limiting the spread of nuclear weapons.
Lavrov said the risk of a nuclear confrontation has increased strongly recently, noting that Moscow is ready to discuss limiting new weapons systems with Washington.
The New START treaty is a strategic arms reduction agreement signed in 2010 by former US President Barack Obama and his then Russian counterpart Dmitry Medvedev, which sets the number of warheads and missiles for the two countries.
The Russian Foreign Ministry confirmed days ago that Russia strictly abides by the moratorium on nuclear testing, and adheres to all provisions of the Comprehensive Nuclear-Test-Ban Treaty.
"Unlike the United States, which we ratified 20 years ago and successfully implemented, we assume that any disagreement over compliance standards with related obligations can and should be resolved within the framework of the Comprehensive Nuclear-Test-Ban Treaty after it enters into force," she said in a statement.