moscow russia say saturday fully commit cold war-era pact unite state ban intermediate-range cruise missiles day washington accuse moscow violate treaty u.s. state department say friday washington review military options include new intermediate-range cruise missile systems response say russia ongoing violation 1987 intermediate-range nuclear force treaty warn first response president donald trump administration u.s. charge first level 2014 russia deploy ground-launched cruise missile breach pact ban test field missiles range 500-5,500 kms 310-3,417 miles russian deputy foreign minister sergei ryabkov say allegations absolutely unfounded support technical characteristics launch installation allegedly comply treaty flight telemetry data nothing understandable simply exist say write comment publish foreign ministry echo previous russian statements ryabkov say moscow fully commit treaty always rigorously comply prepare continue however side stop follow force president russian federation vladimir putin already say respond kind add u.s. allegation strain relations moscow washington state department friday hint possible economic sanction issue washington already sanction russian entities individuals include people close putin moscow 2014 seizure crimea ukraine allege interference 2016 u.s. presidential election kremlin repeatedly deny interfere election ryabkov say attempt frighten us sanction laughable time american politicians diplomats understand economic military pressure russia work say version story refiled clarify paragraph u.s. administration state department review military options russia say fully commit nuclear missile pact