  At present, the main topics addressed by kaon physics are the unitarity test
of CKM matrix via precision measurements of the Cabibbo angle as well as
precision tests of discrete symmetries: in particular, study of possible CPT
violations in a model-independent way through the Bell-Steinberger relation, or
through the measurement of charge asymmetries. Other interesting topics are
related to the test of predictions from chiral perturbation theory. Also status
and prospects of the $K^\pm \to \pi^\pm\nu\bar(nu)$ and $K^0\to\pi^0\nu\bar(nu)
decays are discussed.
