Δ I = {1}/{2} rule from staggered fermions.

We present our latest results for the Δ I = {1}/{2} rule, obtained on quenched ensembles with β = 6.0 and 6.2, and a set of N_f = 2 configurations with β = 5.7. The statistical noise is quite under control. We observe an enhancement of the Δ I = {1}/{2} amplitude consistent with experiment, although the systematic errors are still large. We also present a non-perturbative determination of Z_P, Z_S and the strange quark mass. We briefly discuss our progress in calculating ɛ'/ɛ.