Satellites are a poor choice for this particular problem (i.e. when you think an adversary may cripple your communication capabilities), because they can be disrupted, especially if your adversary is one of the premier states in spaceflight and weaponry.
A more resilient choice is troposcatter [1], which has evolved since the 50s [2][3]. A nice property of troposcatter is that it's difficult to intercept and difficult to disrupt between the origin and the destination.
Of course, such a system still lacks the bandwidth for day-to-day commercial usage, by orders of magnitude.
I wonder how well 4QAM or something similar does in those situations. 2Ghz is a pretty fast rate, 8gbs + FEC is probably still not that large of a link though.
A more resilient choice is troposcatter [1], which has evolved since the 50s [2][3]. A nice property of troposcatter is that it's difficult to intercept and difficult to disrupt between the origin and the destination.
Of course, such a system still lacks the bandwidth for day-to-day commercial usage, by orders of magnitude.
[1] https://en.wikipedia.org/wiki/Tropospheric_scatter [2] http://www.comtechsystems.com/wp-content/uploads/2014/05/Tro... [3] http://www.mwrf.com/systems/troposcatter-system-maintains-50...