What was the United States government determined to do with the passage of the USA Patriot Act of 2001 and the creation of the Department of Homeland Security?

A. Search for weapons of mass destruction in South Asia
B. Increase the globalization of the economy
C. Bring about an end to the Cold War
D. Prevent future terrorist attacks

The quote below is an excerpt from the charter of the united nations: "the purposes of the united nations are: to maintain international peace and security, and to that end: to take effective collective measures for the prevention and removal of threats to the peace, and for the suppression of acts of aggression or other breaches of the peace, and to bring about by peaceful means, and in conformity with the principles of justice and international law, adjustment or settlement of international disputes or situations which might lead to a breach of the peace . " source:this section implies that the united nations is prepared to do what to keep world peace?