The fatal crash occurred as Sacoolas, a US State Department employee whose husband worked for the US government at a British military base, was driving on the wrong side of the road near the village of Croughton, in central England, in August 2019. Harry Dunn, whom her car struck, died later in a hospital. The episode caused international friction when Sacoolas left Britain three weeks after the crash, claiming diplomatic immunity. Britain issued an extradition request for her return, but the US government rejected it, arguing in a statement at the time that honouring it “would render the invocation of diplomatic immunity a practical nullity and would set an extraordinarily troubling precedent.” That response infuriated many in Britain, and Boris Johnson, then the prime minister, demanded her return. President Donald Trump then tried unsuccessfully to stage a White House meeting between Dunn’s grieving parents and Sacoolas. According to the independent police review, “What was an investigation into a fatal road traffic collision became a diplomatic issue with various notable politicians being involved.”