Hard to make it happen politically. India tried something similar, to get gas from Iran in a pipeline. http://en.wikipedia.org/wiki/Iran%E2%80%93Pakistan%E2%80%93I... The project has been gestating for the last 20 years with no real movement in the progress meter. And similar to what happened with the pipeline, I expect the US to spring roadblocks all over the place. Even if it cannot convince every country, it will convince enough to ensure gaps in the rail line undermining its usefulness.