Vladimir Putin has threatened any country thinking of retaliating against Moscow after claiming that Russia has successfully launched the unstoppable 'Satan-2' missile.
The weapon, equipped with twelve warheads, has the power to completely eradicate regions as big as France, Texas, the UK and Ireland in minutes.
The missile was reportedly launched on Tuesday from Plesetsk Cosmodrome in Arkhangelsk Oblast, northwestern Russia.
READ MORE: Russia claims World War Three has begun as Vladimir Putin makes terrifying move near Ukraine
Russian defence sources have claimed that the deadly missile travelled almost the entire length of Russia easily, landing at Kura Missile Test Range on the Kamchatka Peninsula in just 15 minutes.
Video footage released by Russian officials showed the 115-foot missile emerging from an underground silo through huge flames and smoke.
The killer weapon can carry up to 15 warheads and is capable of dropping nukes on an area in a single strike.
If the missile were to strike Ireland, the country would cease to exist within minutes, as the bombs are said to be 1,000 times more powerful than those used by the US in its attack on Hiroshima and Nagasaki in Japan during World War Two.
Just one of the missiles contains eight megatons of TNT-equivalent explosive power.
Officials have said that the RS-28 Sarmat has the capability to use trajectories and unpredictable routes that "substantially impede their destruction even by advanced missile defence systems", according to the Kremlin.
Putin was shown on state TV being told by the military that the missile had been launched from Plesetsk and hit targets in the Kamchatka peninsula.
The Russian President said: "The new complex has the highest tactical and technical characteristics and is capable of overcoming all modern means of anti-missile defence.
"It has no analogues in the world and won't have for a long time to come.
"This truly unique weapon will strengthen the combat potential of our armed forces, reliably ensure Russia's security from external threats and provide food for thought for those who, in the heat of frenzied aggressive rhetoric, try to threaten our country."
He was seen in a video conference with defence minister Sergei Shoigu - who had been rumoured to be sidelined.
Shoigu told the President: "Comrade Supreme Commander-in-Chief - preparations for the first flight test of the Sarmat missile system completed at the first state test cosmodrome in Arkhangelsk region."
A military announcement said: "Today at 15:12 Moscow time, a successful launch of a stationary intercontinental ballistic missile Sarmat was conducted from the silo at the Plesetsk state test facility in the Arkhangelsk region.
"The objectives of the launch were fully achieved.
"The design and performance of the missile were tested.
"This launch is the first in the program of state tests. After the completion of the testing programme, the Sarmat missile system will be put into service of the Strategic Missile Forces,"
Professor Malcolm Chalmers from the Royal United Services Institute (RUSI) previously told Reuters Sarmat was unlikely to make a big difference to Russia's ICBM force due to its "already considerable destructive potential".
Commenting on the weapon's destructive power, Prof Chalmers said: "Claims that a large nuclear attack would kill every living being in the world are sometimes made as a result of wider climate-changing consequences, such as a nuclear winter.
"This should not be ruled out, but would at a minimum require hundreds of warheads, not a single missile."
READ MORE: Ukrainian woman who was accused of sex working by Irish host says she was just going on dates
READ MORE: Leo Varadkar shares 'incredible' picture from Ukraine as Putin raises nuclear fears in Russia
Get breaking news to your inbox by signing up to our newsletter.
