Russian state news agency Interfax reported Putin's comments (machine translation):

In order not to provoke a further strategic arms race, to ensure an acceptable level of predictability and restraint, we consider it justified to try to maintain the status quo that has developed, thanks to the START Treaty, at the current rather turbulent stage. Therefore, Russia is ready to continue to adhere to the central quantitative restrictions under the START Treaty for one year after February 5, 2026.

Putin made his comments Monday at the operational meeting with the permanent members of the Security Council of the Russian Federation, Interfax reported.

The Russian news agency then noted that Putin said Russian adherence for another year would depend on the actions of the United States.

"We believe that this measure will become viable only if the United States acts in a similar way and does not take steps that undermine or violate the existing ratio of deterrence potentials," Putin said.

The Russian president then singled out the Biden administration for undermining the treaty. 

Because of "the extremely hostile policy of the Biden administration, which violated the basic settings on which this treaty was based, its full implementation was suspended in 2023," Putin said.

The Associated Press noted that the statements from Putin came after the Russian President met with President Trump in Alaska in August. "President Donald Trump has said that he and Putin talked about nuclear weapons" at that summit, AP reported.

According to Interfax, Putin lamented that the imminent ending of the START Treaty would have a negative impact on nuclear weapons proliferation.

"The START expires on February 5, 2026, which means the imminent disappearance of the last international agreement on direct restrictions on missile and nuclear potentials. A complete abandonment of the legacy of this agreement would be an erroneous and short-sighted step from many points of view, which, in our opinion, would have a negative impact, in our opinion, on ensuring the objectives of the Treaty on the Non-Proliferation of Nuclear Weapons," Putin said according to a machine translation of the Interfax report.

The Russian president then ordered Russian security to monitor American activity seemingly with a veiled reference to President Trump's desire to create a "Golden Dome" defense system.

According to AP, Putin instructed Russian agencies to “closely monitor relevant American activities, particularly with regard to the strategic offensive arms arsenal,” with a particular emphasis on plans to “expand the strategic components of the U.S. missile defense system, including preparations for the deployment of interceptors in space.”