On the 19th May 2014 Viet Nam acceded to the UN Watercourses Convention, making it the 35th country to join this global instrument (see here for more details on the relevance of the UN Watercourses Convention to Viet Nam). This marks the culmination of a concerted process to promote the benefits of the Convention and support its entry into force, which since 2006 has been lead by WWF. Article 36 of the Convention stipulates that, ‘the present Convention shall enter into force on the ninetieth day following the date of deposit of the thirty-fifth instrument of ratification, acceptance, approval or accession’. This means that the Convention will enter into force on the 17th August 2014. Entry into force of this global framework convention that seeks to, ‘ensure the utilisation, development, conservation, management and protection of international watercourses and the promotion of the optimal and sustainable utilisation thereof for present and future generations’, is a significant milestone in the development of international water law. Hopefully, entry into force, together with the global opening of the UNECE Water Convention, will lead to growing awareness of the benefits of these global framework instruments, encourage more countries to join them, and go along way to strengthening transboundary governance arrangements across the world.