According to the Times, quoting a source from Buckingham Palace, this project was set up by Special Advisor to Princes Harry and William, Sir David Manning. And this move, for four months a year, could have several reasons.
First, the Times discusses the need to take advantage of the media exposure of the couple to showcase the British Crown, especially on the African continent. Prince Harry lived there for more than a year, in Lesotho, in 2004. He also took his bride for two summers in a row to dodge paparazzi.
The plan has been drawn up by Sir David Manning, the former British ambassador to the US and special adviser on constitutional and international affairs to the two princes https://t.co/9eH8xA05Bx
— The Sunday Times (@thesundaytimes) April 22, 2019
For two or three years, the couple would promote charitable work and help strengthen ties with African countries on the eve of a Brexit that risks isolating the United Kingdom. An ambassador’s role that suits the young couple perfectly.