Addressing an award ceremony for weapons developers in the Kremlin, Putin was cited by TASS as saying that the speed of the next generation of nuclear-powered cruise missiles will be "more than three times the speed of sound, and in the future, they will even become hypersonic."
Tensions escalated between Tehran and Washington after US Navy has launched a submarine capable of carrying a large payload of missiles into the Middle East in an apparent warning directed toward Iran, Fox News reported.