It may be unexpected that a new novel about the Vietnam war was published as late as 2007, but in that year, Tree of Smoke came out. Written by Denis Johnson, a writer who has a significant following, the novel elicited a range of critical reviews (see two examples in the review links below). The novel traces about five main characters over an extended period of 1965-1983 as they move in and out of the war, what preceded and what followed it. The main protagonist is Skippy, a rather passive and no-clue CIA operative who spends most of the book sitting around out of action. He happens to be the nephew of "the colonel", a quasi-mythic figure of the Kurtz type who is usually just on the periphery of the action but seems to fuel most of it. Structurally, the novel moves back and forth among narratives of the five main characters and chronologically over time. There are some striking moments, some rather gruesome as one would expect in a war novel, but some of the material is just boring and even ridiculous. Two minor examples of the latter are Johnson's depiction of mid-1960s Honolulu as a kind of Manila stereotype with melting humid heat, with drunk soldiers chasing whores in sleezy bars, and naming the Malaysian entomologist at the end of the story "Dr. Mahathir" (same name as the ex-prime minster of that country). The book is long, and does have its good moments, and it does evoke the exhaustion, guilt and pain that the war engendered.
For two quite different reviews of the book, see: from NY Times:
https://www.nytimes.com/2007/09/02/books/review/Lewis3-t.html
from Atlantic: https://www.theatlantic.com/magazine/archive/2007/12/a-bright-shining-lie/306434/
