The king calls for a global commitment to restore peace because he paid tribute to the service and sacrifice of the war generation on the 80th anniversary of VE.
Charles describes the Allied victory as “a strong reminder of what can be achieved when countries stand against tyranny”.
At a four-day celebration concert, he went to the flag of the Union on Thursday evening at the London Horse Guards Parade.
Charles deliver his address at 9pm – the exact time of King George Six on the radio broadcast on May 8, 1945, spoke to the nation to show the end of World War II Europe.
In his speech, the king said: “The victory of the Allies at that time, like now, was the result of unity between nations, races, religions and ideologies and fought against the existential threat to humanity.
“Their collective effort is a strong reminder of what can be achieved when countries stand up to tyranny.”
“In remembering the past, we have to look at the future as well. As the number of people living in World War II, it is more discomfort to move our stories to ensure that their experiences will never be forgotten,” he said.
“We have to listen, learn, and share, just as societies across the country have done this week at local street parties, religious services and numerous small measures.”
Thousands of people dressed in red, white and blue in the parade of horses, Central London, have gathered for the concert.
On the day the attacks in Ukraine, India, Pakistan and the Gaza Strip continued, he reminded the crowd of the former Prime Minister Winston Churchill that he said, “The jaw meeting is better than the war.”
“We also have to do ourselves again not only because of freedom but also renewing global obligations to restore fair peace, where war, diplomacy and prevention are conflict,” the king said.
Paying tribute to all those who fought the Nazis, he said that the united country “to celebrate and remember with an unmatched appreciation, service and sacrifice of the war generation that makes it difficult and difficult.”
He recalled how his mother, the late Queen, imported anonymously to the London party, performed Konga, singing until 2am and reached bed at 3am.
“I hope your celebrations are almost just as happy tonight, though I doubt that I have the energy by 2am, let alone pushing you all from a giant Konga to the Buckingham Palace,” he said.
Earlier, the King and the Queen, along with Prince and Princess Wales, Prime Minister Sir Kier and Veterans, participated in an Abby West Minister service.