  An appraisal of average energy of Euclidean non-abelian point-like source in
the instanton liquid is calculated. It behaves linearly increasing at large
distances while unscreened. For the dipole in colour singlet state this energy
increases linearly again with the separation increasing and its "tension"
coefficient develops the magnitude pretty similar to the lattice approach and
other model estimates. The situation of sources arbitrary oriented in colour
space is perturbatively considered.
