i was playing suicidal difficulty just to try it.
i had 4 planets and was hemmed in by the torians.
i was playing it quiet
i lost one planet to infuence
then the jagged knife event struck and i lost another planets (close to a torian world)
i launched troop transports to get it back
and got this message from the torians
"so you are amassing transports before attacking
a obvious and cowardly tactic.
we declare war"
and they annhilalated me