[ OT ] Need some help with Sci-Fi writing

Science fiction traditionally accomplishes 2 goals; 
 
 1 ) it posits, speculatively, that a piece of science theory is actually, in the story, science fact 
 
 and 
 
 2 ) it couches modern day issues in fantastical terms 
 
 So, ideally, your invasion plan would hinge on some theory or hypothesis that is not yet hard fact. For example, a story about people using computers is not science fiction -unless the story were written 200 years ago then it certainly would be! Also, the *theme* of the invasion should mirror a modern day problem, for example the russian invasion of crimea going on right now. 
 
 Make a decision about the point you are trying to convey about this invasion and make it using fictional aliens rather than russians, for example. 
 
 I hope that helps.
