I just noticed that if you click on the "neighbours" tab and then the "i" next to a person's name, it tells you when they were last online. Turns out Adanedhel hasn't been online in a while, so Tom and De-Legro can easily pick at his planets
How are you guys in the south getting on?
Pity his best planets all have planetary defense. oh and he is an ally of mine. Still if I built a big enough fleet