Both the Democratic and Republican parties are controlled by the U.S. ruling class. Even though the two groupings have different constituencies within the population, decisions related to war and peace has continued to favor the militarization of the society.
Resources allocated for imperialist wars abroad and state repression domestically could be utilized for the rebuilding of the cities, suburbs and rural areas of the U.S. Tens of millions remain in poverty as the gap between rich and poor widens.
These issues will only be resolved through a fundamental shift in the control of economic and political institutions in the U.S. Until the government is forced by the people to end its wasteful and genocidal war machine the world will continue to experience instability and dislocation.