Even satellites cannot monitor it.

NEW DELHI: Russia’s new medium-range hypersonic multi-warhead nuclear ballistic missile Oreshnik has been in the spotlight around the world amid a global backlash, and its operational features are being debated.
A few days ago, Theodore Postol, a former professor emeritus at the Massachusetts Institute of Technology who specializes in science, technology and national security policy, and an American missile expert, said that at this point in time, no one can intercept, track or counter Russian Oleshnik missiles. He also said it was impossible.
Igor Korochenko, editor-in-chief of National Defense Magazine and military analyst, said the same thing. He said even enemy reconnaissance satellites were unable to track the Russian missile. Even if they did, by the time the enemy received news from the satellite, the warhead would have wreaked havoc.
Less chance of interception due to fewer booster phases
“Let them set goals,” Igor said. Once Russia sets its sights on Kiev, the world’s air defense systems there will be unable to stop the missile. A feature of medium-range missiles is that they remain in the boost phase for a short time. In other words, the period from when the missile is launched until it gains momentum is the missile’s weakest stage. At the same time, the probability of interception is the highest.
Even satellites cannot monitor launches.
Oreshnik is launched from a mobile ground-based missile launch system. Therefore, there are no reconnaissance satellites in the world that can track launches based on a single location. Its launch system could be carried anywhere, but the satellite was focused on only one location, and the missile was launched from another location. A special thing is that the Oleshnik missile also has anti-missile maneuver capabilities. This means that even if someone launches a missile to intercept it, the missile will be thrown off course and you will be safe.
Each warhead has its own propulsion system, increasing the danger
Igor said that each warhead of this missile has its own propulsion system. How many warheads will the enemy’s interceptor missile aim at? Each warhead can deceive enemy missiles and move towards the target. That means that Oleshnik will destroy the target in any situation.
Temperature 4000 degrees, speed 3km/sec
A few days ago, Russian President Vladimir Putin said the missile would hit its target at speeds of Mach 10, or more than 12,000 kilometers per hour. That is a speed of 3km/s. The weapons there generate temperatures of 4000 degrees Celsius, capable of melting any metal and turning concrete to ash.
Compared to the surface temperature of the Sun, which is between 5 and 6.5 thousand degrees Celsius, this missile is sure to cause tremendous destruction wherever it strikes.