Maybe and yes. It violates the Geneva Convention. But I’m sure there would be ways to ‘justify it’ if a country wanted to do so.

I had expected that it was not economically viable for agriculture, but the article has one source claiming it is actually quite affordable, given current water prices in the west.

A large portion of the article tries to give both sides a voice.

https://en.m.wikipedia.org/wiki/Weather_warfare