  We point out that the hierarchy between the measured values of the CKM phase
and the strong CP phase has a natural origin in supersymmetry with spontaneous
CP violation and low energy supersymmetry breaking. The underlying reason is
simple and elegant: in supersymmetry the strong CP phase is protected by an
exact non-renormalization theorem while the CKM phase is not. We present
explicit examples of models which exploit this fact and discuss corrections to
the non-renormalization theorem in the presence of supersymmetry breaking. This
framework for solving the strong CP problem has generic predictions for the
superpartner spectrum, for CP and flavor violation, and predicts a preferred
range of values for electric dipole moments.
