So in the campaign, planets have a threat meter that increases by an unknown amount for each connected hostile planet. Sometimes putting a fleet on the threatened planet will reduce the threat, sometimes it’s not strong enough according to the turn summary.
The only for sure way I know to eliminate threat is to capture all connected planets which makes hub planets with 3+ connections quite a challenge. Is there any info on what triggers big threat gain? Any strategies to reducing it other than placing a massive fleet on it? Also, does the game randomly wait X turns after 100% threat to throw an enemy fleet at it? I’m curious as to how this threat mechanic works to deal with it better.