Army chief Gen Dalbir Singh Suhag today left on a four-day visit to Russia during which enhancement of bilateral military cooperation will be under focus.<br/><br/>The visit assumes significance in the light of the special relationship India shares historically with Russia.<br/><br/>AIR correspondent reports, during the visit, Gen Suhag will be interacting with the top military hierarchy of the Russian armed forces and Defence Ministry.<br/><br/>Among various defence establishments, the Army Chief will also visit the Mikhailovskaya Artillery Academy and Western Military District of the Russian Army.<br/><br/>Indian and Russian armies have a long standing relationship involving training, hardware, exchanges and conduct of military exercises.