  We study SU(5) chiral gauge theories on $R^3\times S^1$. With an unequal
number of fundamental and antifundmental matter representations we calculate
nontrivial pre-ADS superpotentials generated by composite multi-monopoles. We
also point out that the structure of the composite multi-monopoles can be
determined simply from the affine Dynkin diagrams of the gauge group and its
unbroken subgroup. For the case of one flavor, we find that the superpotential
is independent of the composite meson. We show that dynamical 4D SUSY breaking
in the simplest chiral SU(5) gauge theory can be demonstrated directly via
semi-classical effects on the circle.
