Rajamandala
Celebrated with the name "Kautilya", Chanakya was well renowned because of his sheer cunningness, which bears the meaning "liar". Being a person with great pride, ego and an ocean of knowledge, he has helped Chandragupta conquer Bharat in a decisive way. A person with such wisdom has left a pile of texts for his descendants to follow and lead the world. The script called Arthashastra written by Chanakya plays the role of Geeta for the police, politicians and defense system of India.
Rajamandala or Chanakya's Concentric Circle is one such theory documented in Chankaya's magnus opus, the Arthshastra devised to defeat his enemies by all means possible (Saam: persuade , Daam: purchase , Dand: punish and Bhed: exploit the weakness). The timeless theories of Chanakya are now exercised by Indian defense and political system to run the country.
Rajamandala theory is an expression of a kingdom's internal and external dominion. It is purely based on the assumption that " your neighbor is your natural enemy and the neighbor's neighbor is your friend". It can be described as a set of concentric circles surrounding the center. The Center represents the ruler, and the concentric circles around the king represent the neighboring countries that play the part of enemy or ally. The immediate circle (kingdom) encircling the center (king) represents a natural enemy, the consequent circle encircling the previous circle is considered as the ally, and this sequence is followed by the subsequent circles. The concentric circle theory is basically conceptualized on "sandwiching the enemy".