As countries were preparing for the 8th Review Conference of the Biological and Toxin Weapons Convention (BTWC) in November 2016, the BTWC Implementation Support Unit organised four regional workshops, including one in New Delhi, as part of a European Union-sponsored programme supporting the convention. While the BTWC has seen little progress in terms of new legally binding commitments, verification or setting up an international implementation organisation, the workshops revealed that on the regional and local levels states parties are active in ensuring that the treaty commitments are being respected. This account discusses the main trends in treaty development and issues states parties face that emerged during the workshops.