2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/103953We review the main achievements of the research programme for the study of nuclear forces in the framework of chiral symmetry and discuss some problems which are still open.Talk given at The Third Asia-Pacific Conference on Few-Body Problems, Nakhon Ratchasima, Thailand, July 2005Nuclear Theorytext