Solving the strong CP problem with supersymmetry

We propose a new solution to the strong CP problem based on supersymmetric non-renormalization theorems. CP is broken spontaneously and it's breaking is communicated to the MSSM by radiative corrections. The strong CP phase i s protected by a susy non-renormalization theorem and remains exactly zero while loops can generate a large CKM phase from wave function renormalizati on. We present a concrete model as an example but stress that our framework is general. We also discuss constraints on susy breaking and point out exp erimental signatures. (C) 2001 Elsevier Science B.V. All rights reserved.