¿ When you exchange ambassadors, are you allow to cross through your allied hexes without breaking the diplomacy?
The rule states: "Moving your ships to a hex where the other player has a disc or a ship is also considered an attack"
My interpretation is that I can cross if I don't finish my move in a hex that belongs to my allied. So if I cross a allied hex without being pinned and I don't end my move on it then I don't loose the diplomacy. ¿Is that correct?
That is not correct. Crossing through your allies' sector is also considered a hostile act and thus breaks your diplomatic relations.