  Over the next years, the Flavour Physics community will be looking for
inconsistencies of the Standard Model (SM) by exploiting new and precise
measurements. In these ``indirect new physics'' searches, the key strategy is
to concentrate on observables, which are theoretically clean and preferably
suppressed in the SM. In this respect, the four golden modes K+->pi+ n n,
KL->pi n n and KL->pi0 l+l- are very promising. The pollution from hadronic
uncertainties in these decays is at present under control with good accuracy,
thanks to the interplay between theory information (Chiral Perturbation Theory
and OPE) and experimental inputs (KTeV, NA48). Their measurements might thus
give rise to some unexpected scenario. Here, we briefly review the present
situation for these four exclusive rare decays.
