Josie Hornung is a PhD candidate in International Relations at APR2P at the University of Queensland. Awarded the 2019 AEUIFAI Postgraduate Research Fellowship to study at the European University Institute in Florence, she also spent time at the University of Oxford in 2018 on a visiting PhD student fellowship. She also completed extensive archival research in the UK.

She is broadly interested in mass atrocity prevention and looks at the decision making process that has led to action or inaction in the face of imminent mass atrocities. By looking at both modern and historical cases, she seeks to understand which factors are historically contingent on having a particular kind of international order and whether there are any that are not.