BTW, PL made a deal with CFC, will get rights to evac their trapped assets in B-R (they will have done a lot of it by now) under condition they will pull out of the war and leave N3 to fend for itself. PL will go back to defend their renter space from Black Legion. and rebuilding, N3 will probably evac their space asap.
Edit: As for the lead-up: After CFC crushed TEST and old HoneyBadger Coalition, they recognized that N3 and PL were a threat to their long term survival. They managed to get Russian alliances + Black Legion to attack N3, drawing PL in to help N3, and then deployed themselves to help Rus + BL.
The war had pretty much grounded to a halt when CFC and PL worked out the b0tlords accord, basically protecting eachothers space and related income (moons, renters, CSAAs), after which CFC felt free to actually use their own (super)cap fleet. The first encounter has in HED- a couple of days before where CFC mostly used dreads, and it went badly for them because of the module lag all their caps + subcaps caused, giving the slower cycling doomday of titans the advantage. CFC learned from it and adjusted better then N3/PL did in B-R by reducing their subcaps to a minimum and using their supers much better, going directly after N3/PL supers instead of dreads. That and superior supercap numbers in EU tz ended up winning them the fight