Prince Harry has urged the world to help keep the promise his mother made to landmine victims weeks before she died.
Diana, Princess of Wales's last overseas tour was to Bosnia in August 1997 when she met victims of the weapons.
Harry quoted his mother as he gave the keynote address at a Kensington Palace reception on International Mine Awareness Day, and recalled a vow she made to two teenage boys who had suffered life-changing injuries.
Malic Bradoric and Zarko Beric, now aged 33 and 34 respectively, were at the reception in London.
"Twenty years on, they both still struggle with their physical and emotional injuries and with the high costs of replacing their prosthetics," Harry said.
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"When my mother said goodbye to Zarko that August, just weeks before her untimely death, she told him he would not be forgotten."
"Please help me keep her word to Zarko and Malic, and other people like them throughout the world, who still need us to finish the job and rid the planet of landmines."
He added that if Diana was alive today she would not be willing to accept any credit for the fact the Ottawa treaty was signed by 122 states in the same year that she visited Angola and Bosnia.
The global drive supported by Harry to rid the world of landmines by 2025 is to receive STG100 million ($A164 million) of UK government funding.
