I don't think we would collapse all plant life.

While we have the theoretical capability to destroy all plant life, I think realistically we'd end up obliterating a few cities before war would cease, and a full-on nuclear winter is unlikely.

> I don't think we would collapse all plant life.

I mean it's not really about what you think. See the top two links here about the devastating effects of small-scale conflicts

- https://doi.org/10.1038/d41586-020-00794-y

- https://doi.org/10.1073/pnas.1919049117

- https://doi.org/10.1126/science.222.4630.1283

- https://doi.org/10.1029/2019JD030509

- https://doi.org/10.1080/03036758.1986.10423349

- https://doi.org/10.1029/2006JD008235

You don’t need to kill all plants, just enough of those we can eat. Not even all of those, either. Look into history to see what happens when enough people don’t have enough to eat.