Russia’s Avangard Hypersonic Glide Vehicle: What Official US Sources Say

Open official U.S. sources describe Russia’s Avangard as a nuclear-armed hypersonic glide vehicle carried on a long-range land-based ballistic missile. This article follows a Congressional Research Service defense primer updated January 30, 2024, and the official statements that primer cites. A Russian announcement of an activation is not the same thing as a later, independently verified inventory, and this article keeps those distinctions in view.

What official U.S. writing says Avangard is

The CRS primer states that Russia’s hypersonic glide vehicle, known as Avangard, is equipped with a nuclear warhead and deployed on SS-19 long-range land-based ballistic missiles. It notes that while SS-19 missiles can carry six nuclear warheads on a ballistic trajectory, reports indicate that they will deploy with only one Avangard vehicle. The same primer says Avangard reportedly features onboard countermeasures and will be able to maneuver in flight so that it can evade U.S. ballistic missile defenses. Those “reportedly” and “reports indicate” clauses are part of the official CRS wording; this article does not convert them into independently measured performance figures.

In the same document, CRS records that Russia conducted successful tests of Avangard in 2016 and 2018. On December 27, 2019, the Russian military announced that it had activated two SS-19 missiles equipped with Avangard. That is an official Russian announcement, as reported by CRS, dated to the end of 2019. It is not, by itself, a 2024 or 2026 public count of every fielded missile or a confirmation of later expansion.

How official U.S. documents frame the role of the system

CRS writes that Russia views the Avangard system as part of its nuclear retaliatory capability, intended to ensure that Russian missiles could penetrate U.S. ballistic missile defenses. According to the primer’s reading of the Pentagon’s 2022 Missile Defense Review, the United States relies on nuclear deterrence, not ballistic missile defenses, to counter Russia’s long-range missile forces. The primer also records that in March 2018 President Vladimir Putin stated that Russia had pursued hypersonic glide-vehicle technologies in response to the U.S. 2002 withdrawal from the 1972 Anti-Ballistic Missile Treaty.

CRS notes that some U.S. analysts have argued Russia could use Avangard as part of a first strike, even in the absence of U.S. ballistic missile defenses, to attack critical targets quickly, while others have assessed that Russia is likely to deploy Avangard in small numbers, adding little to Russia’s existing nuclear force structure. Those are attributed analytical views in a congressional primer, not operational findings of this article.

What this official picture does not settle

The CRS primer is a background brief, updated in January 2024, not a live order-of-battle. It does not publish a complete public table of every Avangard unit, garrison or later exercise. Where later news stories claim additional deployments, those claims are outside the official U.S. source cited here and are not added into a new inventory. The primer also places Avangard in a wider discussion of hypersonic boost-glide weapons, including Chinese and U.S. programs; this article does not treat that wider competition as proof of any particular Avangard performance advantage, and it does not invent range, speed or accuracy figures beyond the official qualitative description of a maneuvering, nuclear-armed glide vehicle on an SS-19 booster.

Readers should also remember a point the same primer makes about hypersonic glide vehicles in general: their military significance, compared with ballistic reentry vehicles, is not that they necessarily fly faster, but that they can maneuver and change course after release from a booster, complicating prediction of a flight path and the direction of missile-defense interceptors. That is a general official-source description of the class of weapon, not a test report on a specific Avangard flight.

Because Avangard is a nuclear-armed system, official U.S. background writing also places it in the language of strategic deterrence rather than in the language of a conventional battlefield munition. The CRS primer’s citation of the 2022 Missile Defense Review — that the United States relies on nuclear deterrence, not ballistic missile defenses, to counter Russia’s long-range missile forces — is the official framing this article uses. It is not an assessment of whether any particular defense could or could not intercept a given flight, and it is not investment, procurement or threat advice.

Sources

• Congressional Research Service, Kelley M. Sayler, “Defense Primer: Hypersonic Boost-Glide Weapons,” IF11459, updated January 30, 2024, https://www.congress.gov/crs_external_products/IF/PDF/IF11459/IF11459.9.pdf
• The same primer’s discussion of the U.S. Department of Defense 2022 Missile Defense Review, and of the Russian military’s December 27, 2019, activation announcement.