  The inclusive pion double charge exchange process on nuclei is considered in
the framework of the Gribov-Glauber approach. It is shown that inelastic
rescatterings related to production of two (and more) pions in the intermediate
state give an important contribution to the process of double charge exchange
at kinetic energies above ~ 0.5 GeV. This mechanism dominates at energies
greater or about 1 GeV and allows to explain the weak energy dependence of the
double charge exchange cross section observed experimentally.
