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 has recovered what it says are fragments of the experimental ballistic missile capable of carrying a nuclear warhead that Russia fired at the Ukrainian city of Dnipro earlier this month. Members of Ukraine’s SBU security service said investigators are examining the fragments in an effort to learn more about the missile.