Essentially because it will increase the effectiveness of their programming, by minimising the risks to actors involved and mitigating the risk of occurrence or escalation of violent conflict. Other reasons might include:

• internal and external assessments or reports showing that intervention in conflict areas caused harm and have not been maximising possibilities to impact positively
• linkages demonstrated between increased conflict sensitivity and more effective humanitarian relief, human rights, poverty reduction, and peacebuilding programming
• harmonisation of programmes with partnership agreements (eg NEPAD, ACP-EU Partnership within the Cotonou Agreement) and international commitments (eg Millennium Development Goals, Responsibility to Protect).