Acquisition of nationality through naturalization would acquire the nationality of her new husband in the new country of residence. Because most countries in Asia prohibit dual nationality, some Vietnamese women renounced their Vietnamese nationality to apply to acquire the nationality of their foreign husbands. However, an estimated 10 per cent of the marriages between Vietnamese women and foreign men resulted in divorce. Vietnamese women who had renounced their Vietnamese nationality and either failed to finalize the process to acquire the nationality of their foreign husbands or automatically lost their newly acquired foreign nationalities upon dissolution of their marriages found themselves stateless. In 2006, the Vietnamese Government estimated that at least 3,000 women had returned to Viet Nam due to such circumstances and were stateless. They were accompanied by at least 3,000 children born abroad who had undetermined nationality. In 2021, the cases of approximately 1,000 children of a mixed marriage whose nationality was undetermined have been resolved. UNHCR identified five priorities for preventing and reducing statelessness in Viet Nam: resolving the nationality status of the former stateless Cambodian refugees, spontaneous migrants from Lao PDR and Cambodia and other stateless and/or undetermined nationality groups residing in Viet Nam; devising solutions for those women who had renounced their Vietnamese nationality upon marriage to a foreigner that rendered them stateless; promoting reform of Vietnamese nationality legislation in order to fill legal gaps and thereby prevent new cases of statelessness; implementing the National Action Framework on Civil Registration and Vital Statistics 2017-2024 to ensure that all Vietnamese citizens and hard-to-reach and marginalized population groups will be included in the civil registration system, receive a birth certificate and other required identification documents; and accelerating a preparation for the accession to the 1954 and 1961 Conventions on Statelessness by 2025. International engagement and technical assistance to promote reform to address statelessness Once the main statelessness situations in Viet Nam had been identified, the next step was to seek reform of the nationality law and related policies. This was achieved in part through the discreet but significant engagement of the international community with the U N H C R > G P P A C T I O N 1 : R E S O LV I N G E X I S T I N G M A J O R S I T U AT I O N S O F S TAT E L E S S N E S S 57