sentences:  Alkhan-Kala operation
  
  The Alkhan-Kala operation was a "zachistka" () operation by Russian forces in Alkhan-Kala, Chechnya, starting on 25 June 2001, during the Second Chechen War.The week-long sweep of Alkhan-Kala erupted into armed clashes with Chechen separatists, and the initial raid resulted in the death of Arbi Barayev, a high-ranking Chechen insurgent commander and organized crime leader.