Almost all war and strife is about access to resources - when it's not just a foolish game of pride.
Global warming? War? | hell's handmaiden:
"“We will pay for this one way or another,” retired Marine Gen. Anthony Zinni, former commander of American forces in the Middle East and one of the report’s authors, told the Los Angeles Times. “We will pay to reduce greenhouse gas emissions today … or we’ll pay the price later in military terms. And that will involve human lives.”
Could global warming cause war? | csmonitor.com"
So that would be one of them "rhetorical questions."