Hello, I am Sarmat ICBM!
The Sarmat (meaning "eternal" Intercontinental Ballistic Missile weighs 100 tonnes (for comparison, the US made LGM-30 Minuteman is 35 tonnes) with a range of 18,000km.
This allows it to carry up to 15 warheads, up to 750kt. (For comparison - the bomb dropped on Hiroshima was 15kt.)
This would be enough to wipe out a country the size of France. It can carry hypersonic missiles, rendering missile defence systems ineffective.
Importantly, it uses only locally made components.