Thanks for the answer Michael!
I restarted this mission and wait several minutes at the same spot. But this time when I go closer (to 10 K range) the station activate its devastating armament and destroyed all Coalition fighters (fortunately its not shoot me, maybe because I use the afterburner to breach the 10 K range and perform a quick turn back and go away). After the fighter's destruction I got a message to flee from this system.
On the 25th mission (when I go to the large gun station in the Sovietskaya system) the coalition attacked only Juni and she attacks them. I just don't know why they attacks each other when we had neutral status. That is why I ask about this situation. It doesn't affect the mission.