Aeneid 8

There is a lot going on in this chapter, and I'm not really sure what's happening. Alliances are being forged and leadership taken. The drums of war appear to be sounding and it's lining up to be a bloody event over a girl (and perhaps a fear of being led by some foreign leader). Like in the Iliad, some armor is formed by gods and given to the divine hero. Is this a Greek nation state with Greek rulers? Why are the alliances being formed? I'm probably going to have to read this again.