I don't require much for a CS here. 

[b]Nation's full name:[/b] 
[b]Population:[/b] (1950 estimation) 
[b]Current leader's name:[/b] (You may choose another prominent politician in your country for this, even if they never ruled IRL) 
[b]Allegiance:[/b] (NATO, Warsaw Pact, or neutral) 
[b]Military strength:[/b] (This bit may require a bit of research, but it doesn't have to be exact.)