Rajamandala
The Rajamandala (or rāja-maṇḍala lit. 'circle of kings'; raja and maṇḍala mean "king" and "circle" in Sanskrit respectively) theory, also known as the mandala theory of foreign policy or mandala theory, postulates that a neighboring state or neighbor of a natural friend is a natural enemy and that a neighbor of a natural enemy is a natural friend, resulting in alternating circles of enemies and allies centered on a given king's (raja) state.
It appears in the ancient Indian work on politics, Arthashastra (written between 4th century BCE and 2nd century CE) by Kautilya, traditionally identified with Chanakya, and the theory has been called one of Kautilya's most important postulations regarding foreign policy.