https://www.globalfirepower.com/country-military-strength-detail.asp?country_id=russia
https://www.globalfirepower.com/country-military-strength-detail.asp?country_id=united-states-of-america
https://www.globalfirepower.com/country-military-strength-detail.asp?country_id=north-korea
https://en.wikipedia.org/wiki/List_of_active_United_States_Air_Force_aircraft
https://en.wikipedia.org/wiki/List_of_active_Russian_military_aircraft
https://en.wikipedia.org/wiki/List_of_active_Russian_Navy_ships#Landing_ships
https://en.wikipedia.org/wiki/Alligator-class_landing_ship
https://www.britannica.com/technology/Ilyushin-Il-76
https://military.wikia.org/wiki/Antonov_An-124