SU(3) Chiral approach to meson and baryon dynamics

We report on recent progress on the chiral unitary approach, which is shown to have a much larger convergence radius than ordinary chiral perturbation theory, allowing one to reproduce data for meson meson interaction up to 1 .2 GeV and meson baryon interaction up to the first baryonic resonances. Ap plications to physical processes so far unsuited for a standard chiral pert urbative approach are presented, concretely the K(-)p --> Lambda(1405)gamma reaction and the N*(1535)N*(1535)pi and eta couplings.