As long as the US goes around aiding countries with military forces, there always will be a threat. Many countries and terrprist groups are mad at the US government because we like to but in other countries business and disrupt their own balances. Not too long ago I was watching a news story about a small carribean country going through a civil war. The US decided is was in their best intrest to help the government that was being fought , that the people felt was corrupted and needed a reboot, and the rebels lost.