Is nuclear disarmament set to self-destruct?

Jonathan Marcus, BBC (United Kingdom)
The Americans say they have powerful evidence that, over several years, Russia has developed and now fielded a missile that falls within the range that is banned by the INF Treaty. Moscow has arguments of its own, asserting for example that US anti-ballistic missile interceptors deployed today in Romania, but soon to Poland as well, could potentially fall into the INF agreement's terms if their warheads were changed. To put it another way, does either country really want to maintain the treaty? On the face of it the answer is no.