“The king who is situated anywhere immediately on the circumference of the conqueror's territory is termed the enemy.
“The king who is likewise situated close to the enemy, but separated from the conqueror only by the enemy, is termed the friend (of the conqueror).
...
“In front of the conqueror and close to his enemy, there happen to be situated kings such as the conqueror's friend, next to him, the enemy's friend, and next to the last, the conqueror's friend's friend, and next, the enemy's friend's friend.”
Kautilya's Arthashastra, Book VI, Chapter II
“Renovated by Government of India.”
A sign in front of Habibia High School, Kabul (BBC)
