Answer: Russia
Notes: The Indian Air Force (IAF) hosted Exercise AviaIndra-2025, a joint air exercise with the Russian Federation Aerospace Force (RFASF), from December 15 to 22, 2025. Exercise AviaIndra reflects the long-standing Indo-Russian defence relationship and continues the series which began in 2014. Personnel from both countries are conducting joint flying operations on Su-30 MKI, Tejas, IL-78 aircraft, and Mi-17 helicopters. The exercise enables sharing of best practices, lessons learned, and operational expertise between the two air forces.
