  Rare $B$, $D$, and $K$ decays offer unique opportunities to probe for
evidence of new particles from physics beyond the Standard Model at mass scales
extending from the electroweak scale to well above those directly accessible at
the LHC. We review a selection of theoretical and experimental results on rare
$B$, $D$, and $K$ decays illustrating the progress made during the past two
years.

High Energy Physics - Phenomenology;High Energy Physics - Experiment;High Energy Physics - Lattice