Russia’s first regiment of Avangard hypersonic missiles has been put into service, the defence ministry says.
The location was not given, although officials had earlier indicated they would be deployed in the Urals.
President Vladimir Putin has said the nuclear-capable missiles can travel more than 20 times the speed of sound and put Russia ahead of other nations.
They have a “glide system” that affords great manoeuvrability and could make them impossible to defend against.
Defence Minister Sergei Shoigu confirmed the “Avangard hypersonic glide vehicle entered service at 10:00 Moscow time on 27 December”, calling it a “landmark event”.