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.

The NATO-Ukraine Council convened at a meeting on Nov. 26 in response to Russia's use of the intermediate-range ballistic missile (IRBM), "Oreshnik", the NATO alliance said in a news release.

Ukraine-NATO Council convened at the ambassadorial level on 26 November, to discuss Russia's launch of an experimental intermediate-range ballistic missile (IRBM) last week. Source: European Pravda, citing NATO's press service Details: During the meeting,

Hours after the strike, Russian President Vladimir Putin, in a TV address, said that Russia had launched a "new conventional intermediate-range" missile with the codename Oreshnik, meaning hazel tree in Russian.

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.