Russia assured India of the delivery of the fourth S-400 Triumf air defence system in 2026 and the fifth in 2027, ThePrint reported. Defence Minister Rajnath Singh reportedly discussed this with his Russian counterpart, Andrey Belousov, on the sidelines of the SCO Defence Ministers' meeting in China's Qingdao. India currently operates three S-400 systems, which were used during Operation Sindoor.