Russia has successfully test-fired the Sarmat intercontinental ballistic missile, with President Vladimir Putin declaring it the most powerful missile on the planet — and a weapon that could reshape the global nuclear balance. The test, conducted on Tuesday, was broadcast on Russian state television, with Sergei Karakayev, commander of Russia’s strategic missile forces, personally reporting the successful launch to Putin. It is a moment Moscow has been building towards for years, and one that arrives at a deeply unsettling time for international arms control.
Putin wasted no time in making sweeping claims about the weapon’s capabilities. He stated that the Sarmat’s warhead yield is more than four times greater than any Western equivalent, and that the missile is capable of suborbital flight with a range exceeding 35,000km — roughly 21,750 miles. Perhaps most provocatively, Putin insisted it could “penetrate all existing and future anti-missile defence systems”, a direct dig at the United States missile shield that has long been a source of tension between Moscow and Washington.
The road to this moment has been anything but smooth. Development of the Sarmat began back in 2011, and before this week’s launch, the missile had only one previously confirmed successful test. There were also reports of a significant explosion during a failed test in 2024, raising serious questions about whether the programme would ever deliver. Tuesday’s test appears to have answered those questions — at least for now. Putin confirmed that the Sarmat is expected to enter full combat service by the end of this year.
Known in the West as “Satan II”, the Sarmat is designed to replace approximately 40 Soviet-era Voyevoda missiles that have formed the backbone of Russia’s land-based nuclear deterrent for decades. Putin described the Sarmat as equally as powerful as the Voyevoda but with significantly improved precision — a combination that military analysts will be watching closely in the months ahead.
Russia’s Sarmat Missile Test Deepens Fears as Global Nuclear Arms Control Crumbles
The timing of this Sarmat missile test could hardly be more loaded with geopolitical significance. New START, the last remaining nuclear arms treaty between Russia and the United States, expired in February, leaving the two largest nuclear powers on earth without any formal constraints on their strategic arsenals for the first time in over half a century. While both Moscow and Washington have agreed in principle to resume high-level military dialogue, there is no visible progress toward any replacement agreement.
The situation is further complicated by US President Donald Trump’s insistence that any new nuclear treaty must include China, whose arsenal has been expanding steadily. Beijing has publicly rejected that pressure, leaving trilateral talks effectively dead on arrival. Both Russia and the US have also traded accusations of non-compliance with the provisions of New START before it lapsed — a blame game that does little to rebuild the trust needed for serious negotiations.
Putin, who has been in power since 2000, has made the modernisation of Russia’s nuclear triad a defining feature of his presidency. He first unveiled the Sarmat to the world in 2018, alongside a suite of next-generation weapons that included the Avangard hypersonic glide vehicle, reported to travel at 27 times the speed of sound. Those vehicles have already entered active service. Russia has also deployed the Oreshnik intermediate-range ballistic missile, which has a range of up to 5,000km — enough to reach any target across Europe — and has already been used in its conventional form twice against Ukraine since Moscow’s 2022 invasion.
Putin additionally confirmed that Russia is in the “final stages” of developing both the nuclear-armed Poseidon underwater drone and the Burevestnik cruise missile, both of which are powered by miniature nuclear reactors. These are not science fiction — they are active programmes with timelines. Moscow frames all of these developments as a defensive response to the US missile shield, which Russian military planners fear could embolden Washington to consider a first strike, calculating it could intercept any surviving Russian retaliatory missiles.
What we are witnessing is not an isolated weapons test but a deliberate signal — sent at a moment when the architecture of global nuclear stability has arguably never been more fragile. With no treaty framework in place, no trilateral process underway, and Russia actively deploying a new generation of nuclear systems, the world is entering territory it has not navigated in decades. The Sarmat test is, above all else, a reminder that the era of managed nuclear restraint may well be over.