I have had contact with the Hermod Star Empire for some 20 years, and had built up a diplomatic rating of 2200 points, along with mutual trade access and geologic survey data.
I did not explore much, so the next race I "discovered" was when Sol Aliens arrived with Geo survey ships in my home system. I destroyed those I could find, and fortified the jump points. Over the last few years, I have destroyed small incursions of 1 or 2 ships at a time of the Sol Aliens (still maintaining a diplomatic rating of 120 points, not much support for this war apparently
Then suddenly I get a message that the Hermod Star Empire has cancelled Trade access and survey data access, and they start moving into my home system in force, destroying civilian ships on the way.
Why did the Hermod Star Empire suddenly get so pissed? Is it possible they are allied with the Sol Aliens, and are honouring their alliance? I have not entered any of their systems, so I can not guess what I can have done that could bring us to war besides this. If they are in an alliance with the Sol Aliens, are there any way to see this (preferably without using SM)?