I’ve been reading a sci fi book called the windup girl. The setting is a future where agri-tech companies and bioweapons proliferated until some conflict happened that led to almost all crops on earth being wiped out, and only innovative new produce could survive the engineered diseases, so the agri-tech companies have incredible power since the world depends on them for its survival.

I would like to think it’s unlikely to really happen, but I’ve read news in the last 2 years about the USA researching tech that could lead one day to these types of scenarios[1]. There was also agent orange etc in Vietnam, showing a willingness to use such tech even in less serious wars (eg, compared to ones that endanger your cities).

[1] https://www.sciencedaily.com/releases/2018/10/181009102511.h...