Three years on from the Beirut port blast, Hezbollah, with the support of Lebanon's political elite, has managed to obstruct and even quash the domestic judicial process for holding those responsible for the explosion accountable and delivering justice to both victims and a battered nation. The international community must uphold its responsibility toward the Lebanese people by enabling a U.N. fact-finding mission to investigate the blast, sanctioning those responsible for obstructing justice, and making ending impunity the centerpiece of international mediation on the Lebanese crisis.