The ___, the belief that if one country fell to communism others would follow,

dominated US foreign policy for over twenty years.

In Vietnam the fighters used an irregular warfare tactic that made it difficult for our soldiers to be successful...what was it called?

To flush out the enemies camouflaged in the terrain, American ground forces began ___ in cooperation with aircraft.

To clear jungle growth, bombs dropped _____________ (an explosive that burned everything in its path).

Soldiers also sprayed _______ to clear out leaves and grasses in the jungle. Later this was found to have long term health effects to those who came in contact with the chemical.

Although the Soviet Union and the US never went to war against each other, the Korean and Vietnam Wars are considered to be ___ during the Cold War era.