  We derive an U(1) effective theory of color confinement by applying the
so-called Julia-Toulouse Approach for defects condensation to the SU(2)
restricted gauge theory defined by means of the Cho decomposition of the
non-abelian connection. Cho's geometric construction naturally displays the
topological degrees of freedom of the theory and can be used to put the
Yang-Mills action into an abelianized form under certain conditions. On the
other hand, the use of the Julia-Toulouse prescription to deal with the
monopole condensation leads to an effective action describing the phase whose
dynamics is dominated by the magnetic condensate. The effective theory we found
describes the interaction between external electric currents displaying a
short-range Yukawa interaction plus a linear confinement term that governs the
long distance physics.
