The Pentagon says the Oreshnik is a tweak of Russia’s RS-26 Rubezh missile, an intercontinental ballistic missile (ICBM) that has been tested since 2011.

Russian President Vladimir Putin said in a televised address that the attack was a test of Russia's "newest missile," an IRBM called "Oreshnik."

Russia named the missile the Oreshnik, or hazel tree, and said it is impossible to intercept it with air defenses.

This is the first time Russia has used its so-called Oreshnik intermediate-range ballistic missile in combat. The launch also serves as a warning to the West.

Ukraine's Foreign Minister Andrii Sybiha has announced that the Russian attack on the city of Dnipro with an Oreshnik experimental ballistic missile will be discussed at the Organisation for Security and Cooperation in Europe on Wednesday,

NATO members on Tuesday reaffirmed their support for Ukraine during talks with the country's officials held in response to Russia's launch of an experimental intermediate-range ballistic missile last week.

President Vladimir Putin said Friday that Russia will continue to test and start mass-producing the hypersonic ballistic missile that it fired at Ukraine Thursday.

The first combat use of Russia’s new IRBM — which Russian President Vladimir Putin called unstoppable — has drawn scrutiny from Western military experts.

The Air Force reported at dawn on 28 November that Russian Tu-95MS strategic bombers had been scrambled from the Olenya airfield, and after 05:30 Russian missiles were spotted on Ukrainian territory.

Russia’s new ballistic missile flies on a high arc out of Earth’s atmosphere and releases multiple high-speed projectiles, making it challenging but not impossible to intercept