  The hypothesis that high energy cosmic neutrinos are power law distributed is
critically analyzed. We propose a model with two components that explains
better the observations. The extragalactic component of the high energy
neutrino flux has a canonical $E_\nu^{-2}$ spectrum while the galactic
component has a $E_\nu^{-2.7}$ spectrum; both of them are significant. This
model has several implications, that can be tested by IceCube and ANTARES in
the next years. Moreover, the existence of a diffuse component close to the
Galactic plane and that yields (20-30)\% of IceCube's events, is interesting
for the future $\mbox{km}^3$ neutrino telescopes located in the Northern
Hemisphere and for gamma ray telescopes aiming at measuring events till few 100
TeV from the Southern sky.
