treaty was seen as a major breakthrough in nuclear security when it was ratified by former soviet president mikhail gorbachev and u.s. president ronald reagan in one nine hundred eighty seven it came after a tense period of confrontation in the heart of europe. with very short flight times nuclear annihilation of european capitals was only five to fifteen minutes away trump has said the u.s. will start developing these capabilities again if russia and china don't agree to stop have to develop those weapons unless russia comes to us and china comes to us and they all come to is that they say let's really get smart and let's none of us develop those weapons china is not a signatory of the pact and has been investing heavily in land based missiles now some observers fear it could be joined by russia and the u.s. in a new arms race. let's go right to moscow where our correspondent