Opening a command-and-staff exercise for border guards from Russia, Azerbaijan and Georgia, which began in Dagestan, Chairman of the Dagestani State Council Magomedali Magomedov said the three countries\' border guards had to establish closer co-operation in order to ensure stability and safety throughout the Caucasian region. The exercise consists of two parts: a map exercise meant to help drill co-operation between border guards in case international terrorist units cross the state borders, and a practical exercise involving a manoeuvre group of the Caspian Border Guards Detachment, which will display the fighting efficiency of the personnel and materiel. Results of the exercise will be summed up on Friday. (RIA-Novosti)