  Non-linear effects in hadronic interactions are treated by means of enhanced
pomeron diagrams, assuming that pomeron-pomeron coupling is dominated by soft
partonic processes. It is shown that the approach allows to resolve a seeming
contradiction between realistic parton momentum distributions, measured in deep
inelastic scattering experiments, and the energy behavior of total
proton-proton cross section. Also a general consistency with both ``soft'' and
``hard'' diffraction data is demonstrated. An important feature of the proposed
scheme is that the contribution of semi-hard processes to the interaction
eikonal contains a significant non-factorizable part. On the other hand, the
approach preserves the QCD factorization picture for inclusive high p_t jet
production.
