Russia tested a new intercontinental ballistic missile on May 12, 2026, with President Vladimir Putin declaring the weapon the most powerful of its kind in the world. The launch came months after the last major nuclear arms control treaty between Russia and the United States expired, leaving both countries' arsenals uncapped for the first time in decades.
Russia test-fired the Sarmat intercontinental ballistic missile as part of ongoing efforts to modernize its nuclear forces. (OPB) Strategic Missile Forces Commander Col. Gen. Sergei Karakayev reported to Putin that the launch was successful and the mission had been completed. Putin, who watched via video link from his office, called the test a major event and an unconditional success.
Putin said the Sarmat is the most powerful missile system in the world, adding that the combined yield of its individually targeted warheads is more than four times greater than any existing Western equivalent. He said the first regiment equipped with the Sarmat would be deployed by the end of 2026. The missile was built to replace the aging Soviet-era Voyevoda.
Putin framed the test as a defensive necessity. He said Russia was compelled to ensure its strategic security in light of new geopolitical realities and the need to maintain a balance of power and parity. (Washington Times) Russian military planners have long argued that a U.S. missile defense system could encourage Washington to consider a first strike, betting on being able to intercept any Russian retaliation.
The test comes against a sharply changed arms control landscape. The last remaining nuclear arms pact between Russia and the United States expired in February 2026, leaving no caps on the world's two largest atomic arsenals for the first time in more than half a century. (NPR)
Russia suspended its participation in New START in 2023, citing its refusal to allow U.S. inspections of nuclear sites during the war in Ukraine. According to the last available data under the treaty, as of September 2022, Russia had 1,549 deployed warheads assigned to 540 strategic launchers.
In September 2025, Putin said allowing the treaty to expire would be destabilizing and could fuel the spread of nuclear weapons. He offered to maintain treaty limits for one year after the expiry date, but only if the United States agreed to do the same. Trump initially called the idea a good one in October 2025, but in January 2026 said if the treaty expires, it expires, and suggested a new and better agreement could follow. (NTI) No formal U.S. response was made before the treaty lapsed.
Russia's weapons development has not gone unnoticed in Washington. Trump declared the need to resume nuclear testing, though he has stopped short of providing specifics.
On the same day as the Sarmat test, the U.S. Congressional Budget Office released an estimate that Trump's proposed "Golden Dome" missile defense system would cost 1.2 trillion dollars to build and maintain over the next 20 years. The timing of both developments underscored a widening U.S.-Russia nuclear standoff with no diplomatic framework in place.
The Sarmat test followed a notably scaled-down Victory Day parade on May 9. For the first time in nearly 20 years, no military hardware was displayed. Russian authorities reduced the event due to security concerns after Ukrainian strikes on Russian territory.
Since taking power in 2000, Putin has overseen a broad effort to upgrade Soviet-era components of Russia's nuclear triad, including deploying new land-based intercontinental ballistic missiles, commissioning nuclear submarines, and modernizing nuclear-capable bombers.
The U.S. State Department's January 2025 compliance report noted that Washington was unable to confirm whether Russia remained within deployed warhead limits throughout 2024, due to Russia's failure to fulfill its obligations under the treaty's verification requirements. The report added that the U.S. assessed with high confidence that Russia had not engaged in any large-scale build-up above treaty limits.
Arms control analysts have warned that without a new bilateral agreement, both countries could begin expanding their arsenals freely. The loss of data-sharing measures and established dialogue channels opens the door to worst-case scenario planning and the kind of miscalculations that fuel uncontrolled arms races.