Are China And The U.S. Long-Term Enemies? [Unedited]

Is China’s ascendancy a threat to the U.S.?  China’s rise as an economic and military power, coupled with its aggression in the South China Sea, have led some to call for a major re-balancing of U.S. policy and strategy. Can China be trusted to act as a responsible global stakeholder?  And will they be a long-term ally, or adversary?