Is the permission of the one in authority required for jihad of repulsion?

Question:
He says: Honorable Shaykh, may Allah grant you success, is the permission of the one in authority required for jihad of repulsion, or is it not required because it falls under the category of repelling an aggressor?

Answer:
The one in authority is necessary. It is not possible for jihad of repulsion to take place except under the leadership of the one in authority. As for chaos, nothing is achieved by it. Perhaps the two opposing parties would fight each other and become preoccupied with the enemy. Therefore, the one in authority is necessary for jihad of repulsion and for jihad of seeking. The one in authority is necessary. Yes.