Permission [to fight] has been given to those who are being fought, because they were wronged. And indeed, Allah is competent to give them victory.
The Saheeh International Quran Translation
أُذِنَ لِلَّذِينَ يُقَٰتَلُونَ بِأَنَّهُمْ ظُلِمُوا۟ وَإِنَّ ٱللَّهَ عَلَىٰ نَصْرِهِمْ لَقَدِيرٌPermission [to fight] has been given to those who are being fought, because they were wronged. And indeed, Allah is competent to give them victory.