Political and Security Committee Decision (CFSP) 2015/1823 of 6 October 2015 on the appointment of the EU Force Commander for the European Union military operation to contribute to the deterrence, prevention and repression of acts of piracy and armed robbery off the Somali coast (Atalanta) and repealing Decisions (CFSP) 2015/607 and (CFSP) 2015/1750 (ATALANTA/6/2015)