Group 1 - India is negotiating with Russia for an additional purchase of S-400 missile system components, with a potential contract value of approximately $1.2 billion [2] - The new procurement is a continuation of the previous contract signed in 2018, which was worth $5.4 billion for five regiments of the S-400 system [2] - The successful deployment of the S-400 system during India's "Operation Red Sand" has driven the demand for this additional procurement [2] Group 2 - The Indian Ministry of Defense is in talks with Russia regarding the joint production or direct purchase of five additional battalions of the S-400 system [3] - An agreement has been reached on pricing and production capacity, with three battalions to be procured directly and two to be produced under technology transfer agreements [3]