“The new administration, led by President (Joe) Biden, has extended START as a first step.

I think that this is a very important step in general, "- quoted by RIA Novosti Putin.

According to him, "on the part of President Biden, this is a manifestation of professionalism, of course."

On February 3, the Russian Foreign Ministry exchanged notes with the American Embassy on the completion of the internal procedures necessary for the entry into force of the agreement on the extension of the START Treaty.