The five grounds for persecution or fear of persecution as stated in Article 1A of the 1951 Geneva Convention are 'race, religion, nationality, and membership of a particular social group or political group.’ The 1951 Refugee Convention grounds of '...race, religion, nationality, membership of a particular social group or political opinion' are certainly not an exhaustive list for invoking refugee status as proved by the subsequent developments and codification of international refugee law.
