I would have to quibble with the description of the India-Pakistan border as being the only one consistently visible from space. What about North Korea's borders with South Korea and China? Its neighbors are both awash with light at night with NK being an almost oceanic dark void between them. And how about the border between Haiti and the Dominican Republic, visible by day from orbit because Haiti forests have been pretty much decimated for firewood and its neighbor's forests are mostly intact.

And the India-Pakistan border is not visible by day, so, so much for consistency, there.

There's three more.