I don't think canceling an already tight military budget in favor of a power source that could be devastating when hit by an airstrike is a good strategy
https://www.oregon.gov/oha/PH/HEALTHYENVIRONMENTS/RADIATIONP...
Big mess, sure, but no meltdown.
Also remember war is really bad no matter what. If someone blow up all the powerplants regardless of sort, a huge portion of people will die simply because the lack of electricity.