The ACA urges Trump to reciprocate and take similar steps, Kimball said, calling on both Moscow and Washington to start talks on a new arms control treaty as well. The two sides could discuss limitations on intermediate-range and non-strategic nuclear arms, as well as ballistic missile defense systems and conventional long-range weapons, according to the expert. Allowing the last remaining US-Russian agreement limiting nuclear weapons to expire and abandoning its legacy would be "a mistaken and short-sighted step," the president warned. Signed in 2010, the New START treaty capped the number of deployed strategic nuclear warheads for both Russia and the US at 1,550. Washington stopped informing Moscow about the location and status of its strategic weapons under the administration of former US President Joe Biden.