ΔI=12Rule in Current-Current Models ofCPViolation

Current-current models of $\mathrm{CP}$ violation of the types discussed by Glashow and Alles are applied to the decay $K\to 2\pi$, using current algebra and partially conserved axial-vector current. It is found that the $\mathrm{CP}$-violating amplitude may violate the $\Delta I=\frac{1}{2}$ rule even though the $\mathrm{CP}$-conserving amplitude does not. It is not, however, possible to predict the ratio $K_L\to {\pi }^0{\pi }^0$ to $K_L\to {\pi }^{+}{\pi }^{-}$ in a model of this type.