The United States and Britain have agreed to amend immunity agreements that allowed the wife of a US official to leave the UK after being involved in a fatal road traffic collision.
British teenager Harry Dunn was killed when his motorcycle was hit by a car being driven by Anne Sacoolas.
The changes will not be retrospective but the British foreign secretary said it would mean that something similar cannot happen again.
US correspondent Kate Fisher reports from Washington
IN: Anne Sacoolas
OUT: SOC
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