Always great - I'm a science fiction writer and I'd say you were right on the button - you have to start seriously factoring in science, technology and climate change as well! Anyway one of my favorite books on the subject you write on is American War by Omar El Akkad. Brilliant book and always wanted them to make a series of movie of it. Described below by Amazon.

Sarat Chestnut, born in Louisiana, is only six when the Second American Civil War breaks out in 2074. But even she knows that oil is outlawed, that Louisiana is half underwater, that unmanned drones fill the sky. And when her father is killed and her family is forced into Camp Patience for displaced persons, she quickly begins to be shaped by her particular time and place until, finally, through the influence of a mysterious functionary, she is turned into a deadly instrument of war.

Telling her story is her nephew, Benjamin Chestnut, born during war - part of the Miraculous Generation - now an old man confronting the dark secret of his past, his family's role in the conflict and, in particular, that of his aunt, a woman who saved his life while destroying untold others.A second American Civil War, a devastating plague, and one family caught deep in the middle - a story that asks what might happen if America were to turn its most devastating policies and deadly weapons upon itself.