2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185230After some general remarks on non-perturbative QCD I present shortly models which lead to a color-electric flux tube formation. The implications of such a flux tube formation especially on high energy scattering are discussed.Plenary Talk at 15th Int. Conf. on Few-Body Problems in Physics 16 pagesHigh Energy Physics - Phenomenologytext