Most nations aren't really interested in nuclear forces because of the cost of them and the fact that they are basically a waste of time and effort. Anyway thats a different issue.
This is the case in most places that we (in the US) would not really care if they had them to begin with. In problem places, this is not really the case. North Korea for example cannot really afford it, yet they have now tested two weapons. Even Libya had a program, they can barely afford anything either.
Apart from a few SSBNs that have a service up to 2015, all of the Russian systems will have outlived their service life by 2010, and they have no extension programmes despite what the scaremongers may say.
This is laughable. Sorry, but the Russians have tested new delivery systems pretty recently, as well as done serious upgrades to its tactical nuclear force.
The real bummer for the Russians was that the mainstay of the ICBM fleet was the SS-18/19 and along with the bulk of the tactical weapons the production/maintenance facilities were in Ukraine which is a bit of a pisser doncha think! Why do you think that the US attaches so much store in getting the Ukrainians into NATO and being their real special buddies? To deny the Russians getting access to those facilites through either threatening military posture or via and economic political pressure.
I doubt Ukraine will ever be in NATO, but that is another issue. Additionally, the Russians have now moved beyond the SS-18/19's. While certainly not in the same scope as in the Cold War, they have upgraded the delivery system. We in the United States have done nothing except downgrade really back to the Minuteman III, and we have more or less made those single warhead missiles.
a reliable and credible.......what......exactly.
Nuclear force that works.
A nuclear weapons system is designed for a specific mission, reliability, accuracy and readiness state plus shed loads of other criteria but lets not bother with that for the moment. Cold war planning was not that complicated in that essentailly you target Russia and its ecomomic/military assests, leadership, population etc. bigger was sometimes better but no always yadda yadda. Okay, so accurate long range delivery systems multiple heads on hair-trigger alert status with high reliability and high maintenance cycles with trained and motivated personnel. Multiple delivery systems short/medium/long range missiles, aircraft, and submarines laying off-shore continental Russia allowed flexiblility and multi-layered responses to dynamic scenarios. Pretty simple huh!
This is a pretty simplistic rendition, but I will go along with it.
So what is your reliable and credible system going to do? destroy small villages or blat the bejeebers out of whopping great cities? Will it be missiles or subs or planes or artilery lobbing these bombs and will they be on ready alert or hair-trigger alert or storeage for 24/48 hours or weeks or months. Do you just want to blat Iran or N. Korea or both (topography is different) do you want to zap their bunkers or their cities or their population or their factories? Or do you just want to whack Moscow?
I want to assure our allies that our extended nuclear deterrent is credible. A reliable and credible deterrent prevents proliferation. In a place like Japan that matters, in a place like Taiwan it matters even more. Do you think that China would have not invaded Taiwan by now if the US had not given Taiwan a security assurance? If China knows our arsenal has atrophied and we won't use it, then what is to stop an invasion? The only thing that would stop an invasion would be a Taiwan nuke, which if they started that program would cause an invasion.
We need flexibility in our response yes. We need to be able to target everything you just mentioned, not throw our hands up and say "oh well, its to difficult."