Russian Compliance with the Intermediate Range Nuclear Forces (INF) Treaty: Background and Issues for Congress [Updated August 2, 2019] [open pdf - 1MB]
From the Document: "The United States withdrew from the Intermediate-range Nuclear Forces (INF) Treaty on August 2, 2019, six months after announcing its intent to do so. The treaty is no longer in force. In comments made before the June 26, 2019, NATO Defense Ministers meeting, General Secretary Stoltenberg noted that 'Russia still has the opportunity to save the INF Treaty' before the U.S. withdrawal on August 2, 2019, but if Russia did not come back into compliance, NATO would respond. During their meeting, the Defense Ministers agreed that NATO would 'do everything that is in its remit to encourage Russia to return to compliance before 2 August 2019. NATO's focus is to preserve the INF Treaty.' They also agreed that if Russia failed to return to compliance, NATO would consider a range of measures, 'such as exercises, intelligence, surveillance and reconnaissance, air and missile defences, and conventional capabilities,' in response. It would also 'ensure that its nuclear deterrent remains safe, secure and effective.' They did not offer any details about these measures, although they did confirm that NATO 'has no intention to deploy new land-based nuclear missiles in Europe. NATO will not mirror what Russia does, and does not want a new arms race.' Further, they noted that the 'Allies are firmly committed to the preservation of effective international arms control, disarmament and nonproliferation.'"
CRS Report for Congress, R43832
Congressional Research Service: https://crsreports.congress.gov/