  Since QCD is believed to be the underlying theory of the strong interaction,
it is appropriate to study techniques that take into account more features of
its rich and complex structure. We begin by discussing aspects of physics that
are ill-reproduced by the usual one- or two-meson exchange approaches and
identify the source of the deficiencies of these models. We then reveal
promising methods for curing some of these ills, such as new quark potential
models, baryon chiral perturbation theory, soluble strongly-interacting field
theories, and large N_c QCD.
