It's not been one incident. I've been attacked twice by Polish guys while in a trader, one a PFK guy and the other Iroquois.
Les Cayes was not attacked last time in return for the Poles guaranteeing that ALL Polish clans would respect the agreement made. This was clearly false.
This has come about because the Poles (not with Iroquois) are using loopholes to go against the spirit of the agreement and we see this as you withdrawing from the agreement we made prior. Yes, attacking escort ships because of your failure to disclose information like a rogue clan means that you can't attack them and this was discussed with your diplomat and he agreed.