  It is shown that resonance interal conversion offers a feasible tool for
mastering nuclear processes with laser or synchrotron radiation. Physics of the
process is discussed in detail in historical aspect. Possible way of
experimental applicaytion is shown in the case of the $M1$ 70.6-keV transition
in nuclei of $^{169}$Yb. Nuclear transition rate in hydrogenlike ions of this
nuclide can be enhanced by up to four orders of magnitude.
