Imagine a binary planet - that is, two earthlike habitable planets in mutual tidal lock, like the ones described in this excellent post.

Now, these two planets are populated by humans and human-like species sharing similar level of technology, ranging over time (the story span is about 100 years) from WW2-like tech through Apollo/Cold War rockets to near-future innovations (like SpaceX's ITS). I mean, both planets start from roughly the same (WW2-like) level of development (due to Precursors or just Alien Space Bats) and then progress on their own, but sharing interest in each other - so there is some technological/cultural convergence as well as notable differences (like USA and USSR).

The important thing is, that some of the countries of the planet A may be hostile towards some countries of the planet B - and vice versa. I imagine that hostilities may range from jamming radio signals (as well as broadcasting propaganda and hacking when computers are invented) to launching Interplanetery (non-)Ballistic Missiles (what other hostilities are realistically possible?).

Now my question is: given all that information (including the planetary setup described in the linked answer), where would you like to set up your own country? In the middle of near side of the planet? Far side? Or maybe on the border? What are the potential advantages/disadvantages of these locations?

I imagine that near side offers better opportunities for interplanetary communication and knowledge sharing (just point your antenna skyward), but at the same time is easy target for interplanetary missiles - or am I wrong? Maybe bombing the far side is not so difficult after all?