soci - spli
- sovereign nation
- sovereign people
- sovereign peoples
- sovereign right
- sovereign state
- sovereignization
- sovereignty
- sovereignty over a territory
- Soviet affairs specialist
- Soviet government
- Soviet Union
- Soviet-style economy
- space
- space activities
- space age
- space cargo ship
- space defense system
- space expenditures
- space exploration
- space exploration program
- space explorer
- space flight
- space laboratory
- space law
- space official
- space power
- space program
- space rocket
- space shuttle
- space station
- space techniques
- space technology
- space tracking station
- space vehicle
- space walk
- space warfare
- space weapons
- space weapons systems
- space-based
- space-based missile defenses
