The battery terminals are represented as electron-source and electron-sink in the user interface of the models. The function of this variable is to stop the model once a certain number of electrons reach the battery positive, and a monitor displays the time taken to fill the electron-sink.
Australia faced the threat of communism after WWII ended in 1945. The threat was known as the Red Menace which was caused by all the conflicts in Asia and also things that were going on in Australia at the time. The Australian government responded to the Red Menace in many ways.
Also, during that time the President of the United States declared that any country from their allies if demanded help to end communism, the US would provide it. However, when the Vietnam War broke out, the Cold War was going on still between the US and the Soviet Union, and the tensions were at its peak. So, the US actually had its plate full of problems to deal with. One was the Civil Rights War within the country, the other was the Vietnam War and another was the Cold War. In retrospect, the United States did not do much to end communism and it ended on its own. People in the world are not stupid and they do not need a superpower to put an end to their problems.