Are you aware that would be quite a risky approach to take when comes to dealing with China and Russia, OP? There is a good reason neither the United States nor the Western allies have considered to do such thing like demand political change by directly threatening the Kremlin or Pekín; even if a big percentage of people in those countries are not willing to fight for their leaders, it does not mean those leaders won't force them to do so, the military there is pretty much in the side of those regimes and whether we agree with it or not, destroying key infrastructure like those used for communication could easily devolve into a causus belli.
Just think about it, North Korea is of the size of a fraction of both Russia and China but USA does not dare to deal with them directly, because their weapons and the human cost of it would be too high to try to break a fragile peace.