Sorting and categorising the world's militaries

Question

Given that in my question, Defeating the revised Snakebot of Doom, the nanite-AI intelligences that control the Snakebot of Doom will prioritise its attacks on the most militarily-capable nations, this then begs the question:

How would we order the nations of modern Earth based on their capability to inflict damage on large, armoured, mobile enemies, in the face of the enemy's sophisticated point-defence and electronic warfare capabilities?

Obviously, this isn't about numbers of foot-soldiers. The SoD can largely ignore any mere rifle-toting infantryman, and concern itself more with missiles or nuke-toting infantrymen. This is more about which nations are best able to deliver big bangs accurately to a target moving at moderate speeds over as short a timeframe as possible.

Would I be correct in assuming that the USA is the most capable nation in this fashion? What other nations would be able to respond with nuclear weapons? Which would be able to launch them, and which would have to use their atomic weapons as mines? Are there any non-nuclear nations with the ability to deal large amounts of damage to an actively-defending mobile structure using conventional weapons?

Please don't mention any speculative or futuristic weapons, such as rail guns or orbital kinetic "rods from the gods", unless you have evidence that - despite current indications - there are nations that have actually deployed such weapons.

Answer 1

Just sort nations by industrial output, China would most likely come first, then either Russia or the US.

However I don't predict a long conflict, after China both Russia and the US will be laying Tsar bomb like nuclear mines, even if an effectively point blank hit from one of those doesn't outright destroy it the heat/radiation will cook most of the nanites and what remain won't last the ensuring nuclear & conventional bombardment.

Heat does terrible things to machines and the more sophisticated they are the worse it gets, nanites being the epitome of sophistication would be utterly devastated by heat and radiation. On a larger scale solder melts, wire coatings melt (causing short circuits with cause even more damage), bearings seize (heated metal expands), O-rings melt (all pneumatics and hydraulics fail), glass warps (again it expands when heated, so now all the optics are fuzzy at best), fuel becomes explosive, battery fluids may boil, hydraulic fluid expands, heat also increases electrical resistance which means if you try to fire your railguns they'll just heat up even more.

Answer 2

Credit Suisse (a bank!) developed a list of nations by military strength. Global Firepower does a similar list.

Because I'm bored and I like spreadsheets, I did a transformation to a 0-1 scale for both and averaged the two lists together. Results:

• USA 1.00
• Russia 0.87
• China 0.85
• India 0.56
• Japan 0.46
• France 0.45
• United Kingdom 0.37
• Italy 0.32
• South Korea 0.32
• Turkey 0.30
• Pakistan 0.22
• Egypt 0.19
• Israel 0.15
• Taiwan 0.14
• Germany 0.13
• Australia 0.12
• Thailand 0.11
• Poland 0.09
• Indonesia 0.05
• Canada 0.00

Haha, Canada. But seriously, anyone who thinks Egypt could take Israel in a war straight up has not been paying attention. But those are the numbers, according to the internet.

Answer 3

In my opinion, it wouldn't prioritize the most military-capable nations, but rather smaller nations which wouldn't incur the wrath of a nuclear power, and expand into many Doom Snakes, also it will realize nuclear war is imminent and use large scale smoke in mask its location. If it is fighting a nuclear power it will use cities and other populated areas, to avoid a nuclear attack.

Almost all of the nuclear nations in our planet are capable of ICBM, once within range, (Russia, USA, and China have worldwide range) will take it about 30-45 minutes to hit the target. MIRVs for multiple targets/ creating decoys and SLBM for quick repose if nuclear submarine is near by. List of countries with nuclear capabilities under NATO include Belgium, Germany, Italy, Netherlands and Turkey (Needs permission/approval). Other than that Israel, India, Pakistan, North Korea, USA, Russia and China all have nuclear missiles.

No country would use atomic weapons as mines, even the crude ones (Pakistan, North Korea) use it with a bomber, there are also few artillery nuclear weapons if combat is much more closer. Even Non-Nuclear countries would be able to defend it with heavy artillery and bombardments, wouldn't not be as effect as a single nuke, but modern warring nations would decimate it with shear raw force because planes/Jet are much faster and better at warfare than a terrestrial object.

If a nanite-AI capable of what you describe exists, it would easily defeat human forces, even with nuclear weapon with a different more tactical strategy.

Most likely to least likely

1) Tier 1 Countries either with nuclear weapons or strongly allied (existing treating) with nations with nuclear weapons, List is not limited to this USA and Nato, which is all of EU, Canada, Australia and New Zealand, Also Japan, South Korea, and Philippines,Russia, China, India, Pakistan, Israel, Iran, North Korea. Also Countries which are very close to a nuclear nation, as it would see it as a very imminent threat, Hong Kong, Bangladesh, Nepal, Bhutan, Mexico, Mongolia Few of the Middle eastern countries, Most of Caribbean, Oceania Islands. Might also include countries which a nuclear power is in war with, Syria, Iraq and Afghanistan. Also countries would defend economical interest like Panama or Suez canal.

2) Tier 2 would be non nuclear countries with immense military power, Brazil, and some South American Countries which are a little stable, South Africa, Thailand, Vietnam, Laos, UAE, Saudi Arabia, Malaysia, Singapore.

3) Tier 3 countries, have very little chance of defeating, with little to no advanced bombers, Countries already at civil war, South Sudan, Eritrea, Ethiopia, Most African countries some north African and Middle east countries, Papa New Guinea, Cambodia remote Islands.

4) Tier 4 Countries which cannot defend, nor would the doom snake be interested as lack resources, Includes North African Countries, Deserts, Antarctica.

If countries would be fighting alone without any allies the list would much more different.

Answer 4

The Snake wouldn't be concerned with raw firepower until humans are desperate. It will initially be concerned with maintaining it's information feed.

My problem with both of the current answers is that they don't address how the military is divided, nor the investment in weapon types by each of the said militaries. The SoDs largest threat by and far large is airpower. Not normal nuke the area with atomic weapons airpower, although countries will resort to that if necessary, but precision airpower exploiting the SoD's massive weakness of LOX. If I was the SoD, I would primarily be concerned with two things - the NSA and the United States Navy. Obviously no force is going to win a gunslinging match, so you need to blind and deafen the the SoD before you drop your LOX JDAMs onto the it. The NSA and other similiar agencies can actively work to shut down it's connections to the larger internet, or at worst work to shut down internet infrastructure. The US Navy in particular is important because it has the best network of mobile EM jammers in the world in the EA-18G Growler. If your Snake is blind, it doesn't matter how big a stick we're using. We can prod it to death. Therefore, the US is easily first. Then the list will likely split between Intelligence capabilities and EW capabilities.