The Diplomat was originally an Australian bi-monthly print magazine, founded by Minh Bui Jones, David Llewellyn-Smith and Sung Lee in 2001.

Pach assumed the role of executive publisher and hired former Penthouse editor Ian Gerrard to update its presentation.

The Diplomat has published interviews with many public figures, including Ali Allawi, Anwar Ibrahim, Ian Macfarlane, Brent Scowcroft, Mike Moore,[4] Jason Yuan,[5] Kim Beazley,[6] Wegger Christian Strømmen,[7] Shankar Prasad Sharma,[8] and Jaliya Wickramasuriya.

[9] Prior to 2004, The Diplomat used to run advertisements emphasizing the magazine's Australian perspective by presenting the national flags of the United States, the UK, and Australia and logos of Time and The Economist with a headline "To which view do you subscribe?"

[10] In April 2020, The Diplomat published An Open Letter to the People of the United States From 100 Chinese Scholars, which is written by 100 Chinese scholars from the fields of philosophy, political science, economics, medicine, international relations, sociology, law, communication, military science, technology, and beyond, asking the U.S. to work with China to tackle COVID-19.