Answer: even tho this question is opinioned and probably will get full credit no matter what i thinkt he correct answer is alliances. Alliances can cause instability among neighbors, via moral hazard, pulling the United States into wars it unintentionally encouraged. Were allies more concerned about losing U.S. protection, this problem would be reduced. A related phenomenon occurs when states that the United States protects abuse their citizens. But the keyword in the question is "think".
