Magnurm's coment : A-135 was completely replaced by A-235, and the A-135 was hardly a true deterrent against ICBM's (unlike the S-500), it was a point-blank defense to buy enough time to fire nukes back at NATO as well allowing the Soviet Politburo to hide in bunkers.
So how exactly would the A-135 or A-235 actually give those on the ground more time... other than actually shooting down incoming ICBM warheads?
ABMs don't work as a deterrent... suddenly the US wont wake up one morning and realise there are ABM missiles around Moscow and suddenly decide not to bother firing ICBMs as Moscow.
So they don't have abms around any major city except Washington D.C.
No... I am talking about the 1972 ABM treaty... the Soviets built and have maintained an ABM system around Moscow, while the US built one around one of their ICBM fields but closed it before it became fully operational.
The US is working on an ABM system to protect all of the US, but that is based in Alaska... and is not really fully operational and would not be effective agaisnt a full nuclear strike from Russia.
But you said previously that Russia can intercept SLBM's . But i just checked Trident D5 terminal phase speed is 8,060 m/s which means 8.06 km/s. So by calculations SLBM interception is not yet feasible for any Russia defense system? or Russia plan is to intercept Trident SLBM's midway before entering the terminal phase? Explain please.
Let me put it this way... what do you think S-500 is for?
Re entry speed is largely dependent on missile range, so a 500km range ballistic missile might come in at mach7 or mach 8. Missiles with flight ranges of 500km to 5,500km are classed as IRBMs so the US wont have any... based on this information the S-400 with its capacity to intercept targets flying at 4.8km/s should stop anything the US has except ICBMs and SLBMs... I say again... with a performance a level above what do you think the S-500 is being developed for?
I will tell you.
ICBMs... SLBMs... Satellites.
When warheads reenter the atmosphere they slow down...