Status of the Cabibbo Angle
  We review the recent experimental and theoretical progress in the determination of |V_{ud}| and |V_{us}|, and the status of the most stringent test of CKM unitarity. Future prospects on |V_{cd}| and |V_{cs}| are also briefly discussed. 
E. Blucher, E. De Lucia, G. Isidori, V. Lubicz (conveners), H. Abele,   V. Cirigliano, R. Flores-Mendieta, J. Flynn, C. Gatt...