Penguins 2002: Penguins in $K\to\pi\pi$ Decays
  This talk contains a short overview of the history of the interplay of the weak and the strong interaction and CP-violation. It describes the phenomenology and the basic physics mechanisms involved in the Standard Model calculations of $K\to\pi\pi$ decays with an emphasis on the evaluation of Penguin operator matrix-elements. 
Johan Bijnens (Lund)