We present a concise review of the theoretical status of rare K->pinunubar
decays in and beyond the standard model. Particular attention is thereby
devoted to the recent calculation of the next-to-next-to-leading order
corrections to the charm quark contribution of K^+->pi^+nunubar which removes
the last relevant theoretical uncertainty from the K->pinunubar system.Comment: 5 pages, 2 figures, talk given at the XLIst Rencontres de Moriond QCD
and High Energy Hadronic Interactions, La Thuile, Aosta Valley, Italy, March
18--25, 200