I have a 4 step plan to solve this problem
1) Pressure Dharan into kicking him out
2) Pressure everyone else to not take him in
3) Bomb the living shit out of his military and infrastructure
4) Repeat 3 every 5 days
The entire point of assassinating spies is to get rid of them. If I spend 1.3 million on an attack that kills 10 spies, I don't want them to magically reappear in exchange for a paltry 250k.