Prince Harry is honoring Princess Diana in the most meaningful way.

On Tuesday evening, more than 20 years after his mother Diana was photographed walking through minefields being cleared by the HALO Trust in Angola and Bosnia, Harry spoke at the Landmines Free 2025 event at Kensington Palace. The red-headed royal was there to voice his support for Mines Advisory Group and the HALO Trust, who have come together in an effort to rid the world of landmines by 2025—an effort dear to his mother’s heart.

Harry said Diana was “shocked and appalled by the impact that landmines were having on incredibly vulnerable people and on children in particular. She did not understand why more people were not willing to address the cause of so much suffering,” he added.

At the event, Harry met two Bosnian men, Zarko and Malic, who lost their legs to landmines as children. Diana met the pair during her final overseas tour in the summer of 1997.

John Phillips/Getty

“When my mother said goodbye to Zarko that August before her untimely death, she told him that he would not be forgotten,” the prince said in his address. “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 this planet of landmines.”

He also spoke of Diana’s unparalleled compassion and dedication to humanitarian causes around the world—a legacy he aims to continue.

RELATED: Prince Harry Recreated This Photo Princess Diana Took in 1995

“She was an advocate for all those who she felt needed her voice most; whether it be marginalized men dying of AIDS in East London, ostracized sufferers of leprosy in India, or the teenage girl who had lost her leg to a landmine in Angola,” Harry said. “She knew she had a big spotlight to shine, and she used it to bring attention on the people that others had forgotten, ignored, or were too afraid to support.”

Watch his speech above.

Click Here: Kenzo Women’s New Collection