“…Neither is fully defined despite considerable discussion (see Jervis, 2003;Coll, 2008;Goldberg, 2016). Accordingly, while it would be asking too much to definitively define what constitutes the "Trump Doctrine" at this stage, we see it as important to further the academic debate and establish any role unpredictability has played (see Hill and Hurst 2020;Kitchen 2020).…”