Why Big Nations Lose Small Wars: The Politics of Asymmetric Conflict
researchgate.netRelevant to what is going on in the world today.
The above is the original classic paper in which the term "Asymmetric Warfare" was coined.
For a modern update on the above ideas; see the book How Democracies Lose Small Wars: State, Society, and the Failures of France in Algeria, Israel in Lebanon, and the United States in Vietnam. Review at - https://www.researchgate.net/publication/231859298_How_Democ...
Also Asymmetric Warfare - https://en.wikipedia.org/wiki/Asymmetric_warfare