If the oil doesn't flow than outside actors would intervene but with that stated Western States are heavily demilitarized

The UK struggled taking back the Falkland Islands in the 1980s due to how much the navy had been scrapped

When the USA complains about Western defense bending they are 100% correct

But than again do they really want French, British, German and other military actors with their own national interests being active

In Dune there is a substance called milange or the space which is the power source for everything in regards to technology and space travel

With out the spice interstellar civilization is impossible

It an analogy of humanities dependency on oil

And the lengths we will go to keep it secure