Ukrainian experts claim that the guidance and navigation systems of X-55 cruise missiles, as well as their modifications X-555 and X-101, used by the Russians during the aggression against Ukraine, developed in 1960-1970 of the last century https://
en.defence-ua.com/industries/mod
ern_russian_cruise_missiles_are_equipped_with_electronics_developed_in_the_60s_of_last_century-2640.html
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