Fallout Season 2 finale post-credits sequence: what does it mean?

Warning: Spoilers for Fallout Season 2 Episode 8!

Fallout Season 2 wrapped up today, ending with a few questions answered and a whole lot more questions raised—including a big one (literally) in a post-credits sequence at the very end of Episode 8.

Without getting all the way into spoilers for the episode, Fallout Season 2 ends with some of the characters looking out over New Vegas as a new war begins brewing—a war we'll have to wait for Fallout Season 3 to see.

But wait a minute… wasn't there another war in the works?