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The interrelation between disorder and interactions in two dimensionalelectron liquid is studied beyond weak coupling perturbation theory. Strongrepulsion significantly reduces the electronic density of states on the Fermilevel. This makes the electron liquid more rigid and strongly suppresseselastic scattering off impurities. As a result the weak localization, althoughultimately present at zero temperature and infinite sample size, isunobservable at experimentally accessible temperature at high enough densities.Therefore practically there exists a well defined metallic state. We studydiffusion of electrons in this state and find that the diffusion pole issignificantly modified due to "mixture" with static photons similar to theAnderson - Higgs mechanism in superconductivity. As a result several effectsstemming from the long range nature of diffusion like the Aronov - Altshulerlogarithmic corrections to conductivity are less pronounced.Comment: to appear in Phys. Rev.

Emergence of quasimetallic state in a disordered two-dimensional electron gas due to strong interactions