Why "Oreshnik" is Unstoppable ?

Russia launched "Oreshnik",it is unstoppable.....Why???


---------------------------------------------Contents-------------------------------------------------------------
00:00 - Introduction
01:08 - Cold War
02:48 - How does ICBM Work?
03:28 - MIRV
04:23 -Ballistic missile technology
05:10 -MaRV
05:35 -Ballistic Missile Types
06:17 -Oreshnik
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