Moscow has developed advanced nuclear weapons capable of overcoming any defences, Russian president Vladimir Putin said in a move that will fuel concern about a new arms race with the US.
In his annual state of the nation address on Thursday, Mr Putin said Russia was ready to deploy the results of years of “working quietly and patiently” on a response to US missile defence.
He said Russia had started mass-producing the “Avangard” or RS-26 Rubezh, an intercontinental ballistic missile that carries multiple nuclear warheads capable of flying at 20 times the speed of sound to reach its target and avoid defences deployed by the US and its allies.
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