Prince Harry is said to be "irritated" by the reluctance of some countries to assist financially with clearing landmines in countries like Angola.
The Prince is following in the footsteps of his late mother, Diana, Princess of Wales, by taking up the cause of clearing landmines from African countries scarred by years of conflict.
HALO Trust chief executive Guy Willoughby told Sky News that Harry has been frustrated by the lack of progress on the issue in some areas.
Harry travelled to Angola last week to see mine clearance projects run by The HALO Trust. The 28-year old is Patron of the Trust's 25th Anniversary Appeal.
During the visit, the Prince met de-mining teams and toured minefields in the Angolan town of Cuito Cuanavale, the most heavily mined town in Africa.