When the enemy declares war on you, they only do so when they are guaranteed to win. And they will usually demand tribute from you first. So you have a pretty good buffer before they will attack, and a season to prepare if they warn you. If they take over all of your lands, then it’s game over.
Viewing post in Conquest of Helios (Playdate) comments
It could be. But I would need more info on your circumstances in order to recreate it. There was a bug with that in version 1.0 but it has since been fixed and I haven’t been able to recreate it anymore. You could also be the subject of 2 wars in one season and just didn’t notice the additional message was about your lands.