This video is actually a trailer for an online course but if you just watch the first couple minutes, you'll get an understanding of how environmental/natural resource issues are driving and funding conflicts around the world. Sustainability is about seeing how things are interconnected: economic gain tied to natural resources has been undermining human societies. The course should cover how to turn this terrible cycle around.
Link to video: https://youtu.be/OyTNZtbnvKQ
Link to SDG Academy resources: https://courses.sdgacademy.org/