High-resolution monitoring of parsec-scale jets in the Fermi era
  I review here the present observational efforts to study parsec-scale radio
jets in active galactic nuclei with very-long-baseline interferometry (VLBI) as
related to the new window to the Universe opened by the LAT instrument on-board
the Fermi Gamma-Ray Space Telescope. I describe the goals and achievements of
those radio studies, which aim to probe the emission properties, morphological
changes and related kinematics, magnetic fields from the linear and circular
polarization, etc., and I put those in the context of the radio--gamma-ray
connection. Both statistical studies based on radio surveys and individual
studies on selected sources are reported. Those should shed some light in the
open questions about the nature of emission in blazars.
