As Kai/Vellos might have noticed, I managed to log in and build fleets so I'm still on top of PeterKaan. Hopefully he'll fall soon enough if Vellos is right about his fleets.
I can't see what fleets he may have garrisoned at his planets, but I can't fathom that he'd be able to reliably hold up against 3 attackers (Masdus, Klingzog, Kai) all at once.
He might be able to keep Kai and Klingzog off... meaning... De-Legro! Send more fleets! You have plenty of resources available to do it.