“…LTA has generated an expansive area of research. It has been used to study the personalities of many leaders, including US presidents and presidential advisors, British PMs, sub-Saharan African leaders, Iranian leaders, Israeli PMs, Soviet Politburo members, and heads of international organisations such as the European Union (EU) and the UN (see, for example, Crichlow, 1998; Dyson, 2006, 2009, 2016; Foster and Keller, 2014; Hermann, 1984, 1987, 2003; Keller, 2005a, 2005b; Kille and Scully, 2003; Mastors, 2000; Preston, 2001; Schafer and Crichlow, 2010; Shannon and Keller, 2007; Taysi and Preston, 2001; Van Esch and Swinkels, 2015). This research has shown that leaders’ personality traits do indeed vary and that its seven personality traits systematically link to policies leaders choose for their country or organisation.…”