How do world issues affect U.S. foreign policy?
1) Most world problems require a quick mobilization of the U.S. military.
2) Depending on the issue, the U.S. might reply with diplomacy, trade, economic sanctions, or military force.
3) As its economy has weakened, the U.S. has stopped using economic sanctions.
4) The U.S. retains its tradition of rarely engaging in world affairs.