Preface It's a great honor to notify you that I've been thoroughly writing this academic interdisciplinary access book for people to learn easily the interdisciplinary of security, politics, economics and diplomacy. This is one of the easiest and the best books which you can learn the meaningful of good governance in a country, and it talks more about optimistic governance for interdisciplinary studies in security, politics, economics and diplomacy. The best mission and vision to help and solve any security, politics, economics or diplomatic issues are the concern of the global citizens. Academically, I used the easiest way of "Teach yourself techniques," in this interdisciplinary book for learning the security, politics, economics and diplomacy in the world. If you wish to be a leader in an institution or in your country then you should study it from this book. It's not been easy to use simplified interdisciplinary academic book of security, politics, economics and diplomacy in one book that combines theoretical and practical applications in the ancient or the contemporary world. Never loosen your will to learn security, politics, economics and diplomacy if you want to be a leader because it's the only way that can allow you to govern good governance in a leadership. What you understand in this interdisciplinary book, you'll have to apply it to everyday life for good, visionary, missionary and optimistic governance in order to maintain law, order and prosperity in your community or country. As we grow older then we're also learning more about worldly knowledge than our religious knowledge, and it's good to study both of the combined knowledge during your lifetime Knowledge is learning and it's a boundary limitation to humanity but only the Creator knows it where knowledge starts or ends completely!