Mafia 19. Trojan War.

I feel a bit out of my depth among you guys.
I just realized that the newspaper gives some kind of hints, right? Like minerals, hides, leaves, etc.
And I didn't fully understand who the Mafia are – the ones with the plus signs or the ones with the minus signs, or should the Trojans kill the Greeks? It's a bit confusing.
Also, the idea that Vegtama killed Achilles, and Vegtama was defending himself, and if there were no other killings, then the Mafia either attacked those who couldn't be killed, or they were blocked. That's it. Sorry for being a noob, I'm playing like this for the first time (I usually play in real life).
Also, could they have blocked Nayra Drake near the gates for 2 days? And that's why there was only 1 killing?