Moscow:Russias intercontinental hypersonic missile, the Avangard strategic system, became operational on Friday.
Russian President Vladimir Putin described the missile unit as "the weapon of the future" and said it puts the country ahead of the US in developing weaponry, media reported.
"It's a weapon of the future, capable of penetrating both existing and prospective missile defence systems," he said earlier this week.
The Russian leader was informed by Defence Minister Sergei Shoigu on Friday that the weapon had been deployed near the Urals, a mountain range that forms part of the boundary between Europe and Asia.
The Avangard, which can reach US territory in 15 minutes, is one of the "super-weapons" presented by Putin during his speech on the state of the nation in March 2018, which led many to talk about a new arms race.
The entry into service of the missiles coincided with the last disarmament treaty between the Kremlin and the White House, START III, which expires in 2021.
Shoigu said in a statement on Friday: "I congratulate you on this landmark event for the military and the entire nation."
Read more:Russia is leading world in hypersonic weapons: Putin
The Avangard has been located at a base that hosts the 13th rocket division in the city of Yasni, Orenburg region, not far from the border with Kazakhstan.
American experts were able to inspect the characteristics and potential of the missile unit during a recent visit to Russia.
The weaponry is composed of an intercontinental ballistic rocket and equipped with one or several hypersonic warheads capable of maneuvering on vertical and horizontal planes and changing course before reaching its target, which makes it virtually invulnerable.
Putin said earlier this week that Russia is the only country with hypersonic weapons.