As defined by the Center for Advanced Research on Language Acquisition, culture consists of the shared patterns of behaviors and interactions, cognitive constructs and understanding that are learned by socialization.
The word "culture" stems from the same Latin root as "cultivate," as in the way we cultivate and grow things from the ground. Culture is essentially what grows up among us as a people, in our art, music, literature, religion, etc.
Preserving the national security of the United States. Promoting world peace and a secure global environment. Maintaining a balance of power among nations. Working with allies to solve international problems.