Russia unsuccessfully tested its invincible nuclear missile during President Joe Bidens visit to Ukraine this week, CNN reported Tuesday, citing two unnamed United States officials.Had it been successful, the officials said President Vladimir Putin would have touted the nuclear test at his state-of-the-nation address.Instead, Putin announced the suspension of Russias participation in the last United States -Russian nuclear arms limitation treaty and ordered his nuclear forces to prepare for a new arms race.Moscow had notified Washington of its Sarmat superheavy intercontinental ballistic missile test launch through deconfliction lines in advance, CNN cited one official as saying.United States officials also used communication channels Sunday night when they notified Russia of Bidens surprise visit to Kyiv hours in advance.The United States did not view the Sarmat launch as an anomaly or an escalation, CNN reported, citing one of the officials.The Sarmat ICBMs last publicly known successful test came months after Russia invaded Ukraine in early 2022.Putin, who has made veiled nuclear threats to Kyivs Western allies throughout the war, claimed at the time that the Sarmat would make the Kremlins enemies think twice.Weighing in at more than 200 tons and able to transport multiple warheads, Sarmat is among Russias next-generation missiles that Putin has called invincible.Sarmat is designed to elude anti-missile defense systems with a short initial boost phase, giving enemy surveillance systems a narrow window to track it down.