Given its mandate and the particular nature of its activities , effective emergency preparedness and response has been a major priority of UNHCR , especially since 1991 . Its capacity has been strengthened considerably in the three key areas of human , material and financial resources making its institutional arrangements ( together with those of the World Food Programme ( WFP ) as referred to below ) among the best practices available in this field for the United Nations system organizations in general , and in the area of preparing and deploying emergency staff in particular .