Humanitarian intervention has been one of the fast-evolving concepts in contemporaryrninternational law; hence states appear to proceed with practicing it on the grounds of usuallyrnhumanitarian objectives. As the phrase implies Humanitarian intervention is generallyrnunderstood as the instance where states unilaterally or collectively intervene in a third staternwhere the population is suffering seriously, due to internal conflicts, repression or state failure,rnand the state in question is unable or unwilling to halt or avert the suffering. Historically itrnstarted with the justification of protecting citizens of a nation residing in a third state. Butrneventually, it evolved to protecting humans irrespective of their identity.rnThe practices of such intervention prevailed both in the pre-Charter era as well as during thernpost-Charter period. The intervention in South Sudan through the authorization of the UnitedrnNations Security Council is one of such instances. Due to this; and in particular to therninterventions in the Charter period, it is argued that Humanitarian Intervention has a legal basisrnunder international law.rnAccordingly, the Thesis tries to assess the concept of Humanitarian Intervention in light ofrninternational law; and specifically reviews the intervention in South Sudan with respect torninternational law.