Deriving the pomeron from a Euclidean-Minkowskian duality

After a brief review, in the first part, of some relevant analyticity properties of the loop-loop scattering amplitudes in gauge theories, when going from Minkowskian to Euclidean theory, in the second part we shall see how they can be related to the still unsolved problem of the s-dependence of the hadron-hadron total cross-sections.