India to get fourth S-400 system from Russia

India is set to receive its fourth S-400 air defence system from Russia by mid-May, with deployment expected by the end of the month. The delivery timing coincides with the first anniversary of Operation Sindoor (Sindoor Star), during which the S-400 system played a major role in countering Pakistan's aerial threats. A fifth unit is scheduled to arrive in November. The Indian government has confirmed the deliveries as part of ongoing defence cooperation with Russia.