Write it, yes.
But there's another set of voices without which the story is less than half complete. The voices of the people of Vietnam, those on both sides and those stuck in the middle, those who stayed and those who went into exile. Because they were the main victims of it all.
And their's is a different story, and they'd need to tell it. Maybe having empty chairs reserved for them would be the only way to do it. But whatever, they should never be set aside on the margin, as if they were just bit players in a primarily American tragedy.
(Yes, I know Liam, there were Irish on both sides in both Civil Wars. As there have been in too many wars.)