  There are several scales in the QCD as the theory of strong interaction: the
vacuum gluonic condensate (as the divergence of the dilatation current), the
nucleon mass as the basic mass scale in our universe, which is connected to the
string tension $\sigma$, and the perturbative QCD scale $\Lambda_{\rm QCD}$,
which defines the scale of the renormalized perturbative expansions. In this
paper we connect all these scales to the vacuum condensate, using the field
correlator method, where the string tension is expressed in terms of nonlocal
field correlators, which are connected to the local condensates, while the
perturbative $\Lambda_V$ is connected to $\sigma$ in the framework of the
Background Perturbation Theory (BPT). We also demonstrate how the IR
singularities and IR renormalons disappear in BPT making the resulting theory
internally consistent.
