  We briefly review the main results of the IceCube Neutrino Observatory one
decade after the discovery of cosmic neutrinos. We emphasize the importance of
multimessenger observations, most prominently for the discovery of neutrinos
from our own Galaxy. We model the flux from the Galactic plane produced by
Galactic cosmic rays interacting with the interstellar medium and discuss the
perspectives of understanding the TeV-PeV emission of the Galactic plane by
combining multimessenger observations. We draw attention to the interesting
fact that the neutrino flux from the Galaxy is not a dominant feature of the
neutrino sky, unlike the case in any other wavelength of light. Finally, we
review the attempts to identify PeVatrons by confronting the neutrino and
gamma-ray emission of Galactic sources, including those observed by LHAASO. We
end with a discussion of searches for neutrinos from LHAASO's extragalactic
transient source gamma-ray burst 221009A.
