Missions question

[modo]

Thx omegaweapon but I've been there already, I've tested all these options and completing the rts ones is not a problem.
Liberatig systems does indeed free some more missions but the question was for that point where you've done almost all of them (and I mean I'm left with only three assasination missions that I can't get anywhere for 10 years already).
I've even remained on the same planet and let the turns go, checking every two turns for a whole year...no dice.