Western officials, who spoke on condition of anonymity, later told Reuters their initial analysis showed it was not an intercontinental ballistic missile Regardless of its classification, the latest strike highlighted rapidly rising tensions in the 33-month-old war KYIV: Ukraine said Russia fired what appeared to be an intercontinental ballistic missile at the city of Dnipro on Thursday, in what would be the first use in war of a weapon designed to deliver long-distance nuclear strikes. Western officials, who spoke on condition of anonymity, later told Reuters their initial analysis showed it was not an intercontinental ballistic missile, though they left open the possibility that conclusion could change. Regardless of its classification, the latest strike highlighted rapidly rising tensions in the 33-month-old war. Ukraine fired US and British missiles at targets inside Russia this week despite warnings by Moscow that it would see such action as a major escalation. Security experts said that if Thursday’s strike involved an intercontinental ballistic missile, it would be the first use of such a missile in war. ICBMs are strategic weapons designed to deliver nuclear warheads and are an important part of Russia’s nuclear deterrent. “Today there was a new Russian missile. All the characteristics – speed, altitude – are (of an) intercontinental ballistic (missile). An expert (investigation) is currently underway,” Ukrainian President Volodymyr Zelensky said in a video statement. Ukraine’s foreign ministry urged the international community to react swiftly to the use of what it said was “the use by Russia of a new type of weaponry.” The Ukrainian air force said the missile was fired from the Russian region of Astrakhan, more than 700 km (435 miles) from Dnipro in central-eastern Ukraine. It did not specify what kind of warhead the missile had or what type of missile it was. There was no suggestion it was nuclear-armed. Asked about the air force statement, Kremlin spokesman Dmitry Peskov told reporters to contact Russian military for comment. Ukrainska Pravda, a Kyiv-based media outlet, cited anonymous sources saying the missile was an RS-26 Rubezh, a solid-fueled intercontinental ballistic missile with a range of 5,800 km, according to the Arms Control Association. The RS-26 was first successfully tested in 2012, and is estimated to be 12 meters (40 ft) long and weigh 36 tons, according to the Center for Strategic and International Studies (CSIS). It said the RS-26 can carry an 800-kg (1,765-pound)nuclear warhead. The RS-26 is classified as an ICBM under a nuclear arms reduction treaty between the United States and Russia, but it can be seen as an intermediate-range ballistic missile when used with heavier payloads at ranges below 5,500 km, CSIS said.