(Rules of War*)
You may fight in the cause of God against those who attack you, but do not aggress. God does not love the aggressors.
وَقٰتِلوا فى سَبيلِ اللَّهِ الَّذينَ يُقٰتِلونَكُم وَلا تَعتَدوا إِنَّ اللَّهَ لا يُحِبُّ المُعتَدينَ
wa qaatiloo fee sabeelillaahil lazeena yuqaatiloonakum wa laa ta’tadooo; innal laaha laa yuhibbul mu’tadeen
*2:190 All fighting is regulated by the basic rule in 60:8-9. Fighting is allowed strictly in self-defense, while aggression and oppression are strongly condemned throughout the Quran.