Hello,i understand there are professionals well connected with IA in the forum ,i'm baffled by the current status of our t-90 tank force.If u can plz help me understand. First how many types of t-90 are in IA anyway? T-90S .Ok this is the basic export version that india bought 310 of in 2001.All delivered and operational.This has kontakt-k-5 ERA. Now the really confusion begins. There is t-90s bhisma and t-90m vladimir. What is the difference between these 2?Do they both carry kaktus/relikt new gen ERA or old KONTAKT-5? From what i understand there were orders for 330 off the shelf t-90m and then 347 licence produced.Eventually 310 t-90s original plus 1347t-90M/bhisma for total 1657 t-90 tanks. Now latest news MOD cleared proposal for 354 latest T-90MS tanks for six armoured regiments on china border.Now i'm guessing this is the completely redesigned t-90MS TAGIL with the new relikt encased turret structure that was showcased in defexpo 2012. So what i want to know is 1]What is primary difference between bhisma and vladimir? 2]Indian t-90s would be outfitted with Swedish LEDS-150 APS, Kaktus ERA, israeli designed enhanced environmental cooling system, Catherine-FC Gen-3 thermal imager, Matis-STD thermal imager, 52-cal 2A46M-5 Rapira smoothbore barrel with muzzle reference system, 1,000hp V-92S2 diesel engine, 1A43 system gunner's sight *** laser finder, 1G46 Peleng day sight, 9S517 missile guidance module for refleks atgm, 1V528-1 ballistics computer, DVE-BS meteorological sensor licensed copy of elbit and tadiran's digitised battlespace management system & radio communications suite, indigenous gyrobased nav system RPZ-86M anti-radar paint coating Are the above upgarde for t-90m or t-90 bhisma?Or are both same. 3]Is 354 order really the NEW t-90MS TAGIL? 4]How many t-90 tanks are actually operational atm. 5]How many have been fitted with LEDS-150?And are all problems with catherine thermal viewer fixed? 6]Have the original 310 t-90s basic export models undergone any upgrades? Thanks in advance.