From a Jain Dharma perspective, ahimsa (non-violence) is the central principle. Yet Jainism also recognizes the duty to protect life and uphold righteousness (dharma) in the face of danger. Here is how a Jain lens views an invasion or threat:

• Primary stance: Ahimsa remains the highest value. Non-violence is kept as the first and deepest ideal for all beings, including rulers and states.

• Defense as a last resort: If all peaceful means (diplomacy, dialogue, negotiations, economic or social pressure, alliances, and neutral mediation) fail and there is an imminent threat to innocent lives, a defensive response may be considered. Even then, the aim is to minimize harm to all sentient beings and to avoid cruelty.

• Ethical constraints on response: Any defensive action should strive to protect life while consciously trying to reduce injury to enemies and bystanders. Violence is not celebrated; it is permitted only to the extent it prevents greater harm and preserves the possibility of future non-violent outcomes.

• Non-violence in leadership and governance: A Jain ruler is advised to practice restraint, fairness, and forbearance. Policies that reduce harm—like protecting civilians, ensuring food and shelter for the vulnerable, and seeking non-violent solutions—are emphasized.

• Aftermath and spiritual practices: In the aftermath, focus on repentance and cleansing through pratikraman and reflection for any violence that occurred, reaffirming the commitment to ahimsa in future.

• Differences between Digambar and Shwetambar traditions: Both traditions uphold ahimsa as supreme. Details about when or how defense is permissible can vary in local ethical interpretations, but the core emphasis—minimize harm and seek non-violence—remains central.

• Practical takeaway for a lay Jain: Work through non-violent means first (martial or defensive action is not a Vrahavya path for a Jain’s daily conduct). Support diplomacy, humanitarian aid, and peaceful resistance; cultivate inner purification (samvara) to strengthen resolve for non-violence in all circumstances.

If you’d like, I can share a brief, authentic Jain reference in text (arth) that elaborates on how ahimsa is reconciled with duty and defense, and how prayers like pratikraman are used after difficult events.