About the Surah

If two groups of believers happen to fight, then make peace between them (by eliminating the cause of the fight). However, if one group continues to wrong the other unfairly, then (all of) you fight against this group till it complies with the Command of Allah. Then if it complies, make reconciliation between them justly (i.e. simply  stopping the fight is not enough. Make them meet each other and advise them to avoid any future disputes). And judge with justice (let not any personal feelings influence your judgement). Indeed, Allah loves those who are just.