Recently I was attacked by a pirate me being US. I was able to escape with one of my Indianman to port though he did capture one.. This was right near my port just after the green zone was removed. So far so good. Then when I entered port I was able to chase him with another ship, as the timer for my tag on him was about to reach zero he disappeared. It seams he decided to enter an ongoing battle on the US side. Here is where the game rules should be adjusted. I should be able to join the battle still obviously on the US side and still attack him since he was flying a "False Flag" US he is still the enemy regardless of the deceptive flag. It makes no sense whatsoever to allow a ship that you manage to get next to disappear, It really should not be considered Green on Green. The other option is that a nation entering a battle should still keep its original flag. Or have his flag replaced once fired at with his actual flag, This would take the join another battle on the side of the enemy chasing you escape hack disappear. Also It would actually be more historically accurate.