National Security Archive’s critical look at the U.S. non-action in Rwanda, https://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB53/index.html
List of neglected humanitarian crises, https://www.undispatch.com/these-are-the-worlds-10-most-neglected-crises/
Cold War International History Project: the Woodrow Wilson International Center for Scholars, https://www.wilsoncenter.org/program/cold-war-international-history-project
United States Holocaust Memorial Museum, https://www.ushmm.org/
Resource page for website of Professor Vincent Ferraro, Mount Holyoke College, South Hadley, MA, http://www.mtholyoke.edu/acad/intrel/feros-pg.htm#documents
This is probably the best “one-stop shopping site” for information on international relations. The site has links to primary source documents for US foreign policy since 1789 as well as links to academic institutes, nongovernmental organizations, foreign governments, and news sources.
CNN Cold War Documentary
JFK “Ich Bin Ein Berliner” speech https://www.youtube.com/watch?v=hJFOsbpQRqQ