The United States plans to test a new missile in coming weeks that would have been prohibited under a landmark, 32-year-old arms control treaty that the US and Russia ripped up on Friday. Washington and Moscow walked out of the Intermediate-range Nuclear Forces treaty that President Ronald Reagan and Soviet leader Mikhail Gorbachev signed in 1987, raising fears of a new arms race. The US blamed Moscow for the death of the treaty. It said that for years Moscow has been developing and fielding weapons that violate the treaty and threaten the United States and its allies, particularly in Europe. “Russia is solely responsible for the treaty’s demise,” Secretary of State Mike Pompeo said in a statement released on Friday. But the US also sees an upside to exiting the treaty. Washington has complained for years that the arms control playing field was unfair. US officials argued that not only was Russia violating the treaty and developing prohibited weapons, but that China also was making similar non-compliant weapons, leaving the US alone in complying with the aging arms control pact. Now, the US is free to develop weapons systems that were previously banned. The US is planning a test flight of such a weapon in coming weeks, according to a senior administration official, who was not authorized to publicly discuss the weapons development and spoke only on condition of anonymity. The current Pentagon budget includes $48 million for research on potential military responses to the Russian violations of the INF treaty, but the options do not include a nuclear missile. The official downplayed the test and said it was not meant as a provocation against Russia. Because the United States adhered to the treaty for 32 years, the United States is “years away” from effectively deploying weapons previously banned under the agreement, the official said Thursday. Arms control advocates still worry that America’s exit from the INF treaty will lead the two nations to also scrap the larger New START treaty, which expires in early 2021. “Pulling out of this treaty leaves New START as the only bilateral nuclear arms agreement between the U.S and Russia,” said physicist David Wright, co-director of the Global Security Program at the Union of Concerned Scientists. If President Donald “Trump pulls out of that treaty as well or allows it to lapse, it will be the first time since 1972 that the two countries will be operating without any mutual constraints on their nuclear forces.” Trump hasn’t committed to extending or replacing New START, which beginning in 2018 imposed limits on the number of US and Russian long-range nuclear warheads and launchers. Trump has called New START “just another bad deal” made by the Obama administration, and Trump’s national security adviser, John Bolton, said in June that it’s unlikely the administration will agree to extend the treaty for five years, which could be done without legislative action in either capital. The Trump administration thinks talks about extending New START are premature. The administration claims that with China’s growing arsenal of nuclear warheads, Beijing can no longer be excluded from nuclear arms control agreements. Trump has expressed a desire to negotiate a trilateral arms control deal signed by the US, Russia and China. “We’ll see what happens,” Trump told reporters at the White House on Thursday. “I will say Russia would like to do something on a nuclear treaty and that’s OK with me. They’d like to do something and so would I.” The administration official said the US has had regular discussions with the Russians and Chinese about the possibility of a three-way arms control agreement. Trump wants the agreement to address not just intermediate-range weapons, but “all nuclear weapons,” the official said.