Implications of the exciting hints for lepton-nonuniversality seen in ratios of rare B decays into muons and electrons at LHCb are discussed. If indeed true and confirmed with more data in the future at LHCb and Belle II, this would constitute a spectacular breakdown of the standard model.
Leptoquarks provide natural explanations of the anomalies as they carry lepton and quark flavor charges and thus generically can induce nonuniversality, and lepton flavor violation. B-physics data point to masses from just around the corner, at the present search limits, to the few multi-TeV range, while viable flavor models suggest few TeV. Collider signatures as in : arXiv:1801.09399 are discussed.