Russian military officials and analysts are bragging about the development of a nuclear weapon “immune to any missile defense” shield.

The new heavy intercontinental ballistic missile is designed to replace a weapons system NATO dubbed the SS-18 Satan, which was slated to be phased out under the terms of an arms control treaty that President George H.W. Bush’s administration signed with the fading Soviet Union. With Russia looking to emerge once again as a great power, state-run media offered a preview of a new ICBM called the SS-X-30, which carries at least 15 nuclear warheads each.