  Neutrino telescope IceCube has recently discovered astrophysical neutrinos
with energies in the TeV-PeV range. We use the data of Fermi gamma-ray
telescope to demonstrate that the neutrino signal has significant contribution
from the Milky Way galaxy. Matching the gamma-ray and neutrino spectra we find
that TeV-PeV Galactic cosmic rays form a powerlaw spectrum with the slope
p~2.45. This spectral slope is consistent with the average cosmic ray spectrum
in the disks of the Milky Way and Large Magellanic Cloud galaxies. It is also
consistent with the theoretical model of cosmic ray injection by diffusive
shock acceleration followed by escape through the Galactic magnetic field with
Kolmogorov turbulence. The locally observed TeV-PeV cosmic ray proton spectrum
is softer than the average Galactic cosmic ray spectrum. This could be readily
explained by variability of injection of cosmic rays in the local interstellar
medium over the past 1e7 yr and discreetness of the cosmic ray source
distribution.
