Russia and China cannot keep pace with the US.  Reagan broke the back of the USSR, when he build up US military power to the point where the USSR essentially had to capitulate.  China is in a tenuous situation as their entire economy, and the standard of living that the 1.3 billion Chinese currently enjoy is a house of cards built upon manufacturing, export and foreign currency.  Without that, their society collapses on its own weight.  The Chinese governments main objective is to keep their people working, producing and innovating to bring in foreign investment, cash and cold, hard currency. Can't do that when your are shooting at your best customer.