it's all very complicated, or I don't understand everything.
alliances and different diplomacy are simply not obvious.
the one who works or helps an invader, is himself an invader, right?
if the invader is infected, he has somehow infected his co-invader if the co-invader is infected, he in turn risks infecting those with whom he has green diplomacy.
blue things, on the other hand, have no diplomacy, they infect humanity, their aim should not be forgotten being to destroy humanity in its original form.
Well said, NoMe. If blue things are naughty, their friends will become naughty too - if not already.
But, staying away from naughty things (blue, or not) can't make other things un-naughty. Also, two naughty things never give one un-naughty, no matter it sounds like bad logic. If you mix red naughty thing with blue naughty thing, all you get is purple naughty... something.
Oh, obviously I'm not an expert about naughty things, but at least I'd know who to ask about it.