U.S. foreign policy is characterized by a commitment to free trade and open borders to promote and strengthen national interests.
Immigration and border security are two important issues for United States policy.
The threat of terrorism is one of the greatest challenges facing the United States and the international community.
The proliferation of nuclear weapons, explosive devices which derive force from nuclear reactions, is a key challenge of foreign policy.
Particularly since the beginning of Operation Iraqi Freedom in 2003, U.S. relations with Iraq have been central to its foreign policy.
The relationship between the United States and Afghanistan has become an integral aspect of U.S. foreign policy.
Three issues of particular importance in Chinese-American relations are economic trade, the contested status of Taiwan, and human rights.
The conflict between the State of Israel and the Palestinians is an important issue affecting American and international policy.
Humanitarian aid is material or logistical assistance in response to crises including natural and man-made disasters.