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Yeah, quite sure this is not a flashback.
But I'm also not entirely convinced this is four years in the future because I couldn't find hard evidence this war is against Paradise (?). It certainly seems the most likely, but then they talk of some Union as the enemy and this might just be a different front Marley is fighting on.

However... why the eff did we need this sudden change of scenery and perspective? Sometimes it seems this story is taking turns just because the author feels like throwing the audience off... again.