This deters future human rights abuses.  The use of force sends a strong message to oppressive regimes that their behaviour will not be tolerated.  Human rights abuses happen around the world because there is no mechanism to stop it. Oppressive regimes thrive simply because there is no real, coherent deterrent to their abuses. Sanctions target their populations not their personal enrichment they gain through siphoning off money from domestic industry, diplomatic sanctions have no tangible impact on states and peacekeepers are useless when there is no peace to keep. The only true deterrent to regimes around the world is the danger that a strong military rival from outside will intervene and stop them and remove them from power.  Sending a strong message that the international community can and will intervene in the cases of human rights abuses seriously increases the costs in regimes' cost-benefit-analysis of state behaviour and deters them from committing human rights abuses for fear of military defeat from abroad.