NEW DELHI: Defence minister Rajnath Singh and his Russian counterpart Andrey Belousov are likely to hold discussion on Dec 4 during the two-day annual India-Russia summit here, and on the table is future acquisition from Russia, which may include its next generation S-500 system.The two defence ministers will review the progress of ongoing defence cooperation between the two countries where India has already expressed interest for the acquisition of more squadrons of S-400 system, besides deliveries of the remaining two squadrons. The next gen S-500 system is capable of intercepting missiles at ranges of up to 600 km.The defence ministry has already given clearance for acquisition of a large number of missiles for the S-400 system with ranges from 120km to 380 km. India has taken up delayed deliveries of the previous order of S-400 with Russia, signed in 2018.India had so far not shown much interest in the S-500 system despite the Russians pitching for it for some time. Moscow has assured New Delhi it will deliver by Nov 2026 the remaining two of the original five S-400 squadrons.