  Arguments against the traditional Yukawa-type approach to $NN$ intermediate-
and short-range interaction due to scalar-isoscalar meson exchange are
presented. Instead of the Yukawa mechanism for intermediate-range attraction
some new approach based on formation of the symmetric six-quark bag in the
state $|(0s)^6[6]_X,L=0>$ dressed due to strong coupling to $\pi$, $\sigma$ and
$\rho$ fields are suggested. These new mechanism offers a strong
intermediate-range attraction which replaces the effective $\sigma$-exchange
(or excitation of two isobars in the intermediate state) in traditional force
models. A similar mechanism with vector $\rho$-meson production in the
intermediate six-quark state is expected to lead to a strong short-range
spin-orbital nonlocal interaction in the $NN$ system, which may resolve the
long-standing puzzle of the spin-orbit force in baryons and in two-baryon
systems. Illustrative examples are developed which demonstrate clearly how well
the suggested new model can reproduce $NN$ data. Strong interrelations have
been shown to exist between the proposed microscopic model and the
one-component Moscow $NN$ potential developed by the authors previously and
also with some hybrid models and the one-term separable Tabakin potential. The
new implications of the proposed model for nuclear physics are discussed.
