Biden, world leaders arrive for Queen's funeral

STORY: U.S. President Joe Biden paid an emotional tribute to Queen Elizabeth on the eve of her state funeral, saying Britain and the world had been lucky to have such a dignified and dedicated public servant on the throne for 70 years.

"To all the people of England, all the people in United Kingdom, our hearts go out to you. You were fortunate to have had her for 70 years, we all were. The world's better for her."

Biden was among the scores of international dignitaries and royals who have arrived in London for Monday's funeral.

He followed other world leaders in appearing on a balcony overlooking the Queen’s coffin in historic Westminster Hall, making a sign of the cross and placing his hand on his heart in reverence.

Biden also attended an evening reception with King Charles, along with French President Emmanuel Macron, British Prime Minister Liz Truss, Israeli President Isaac Herzog, and Dubai’s ruler Sheikh Mohammed bin Rashid, among many other world leaders.

The period of mourning has already drawn hundreds of thousands of people to central London, many clamoring to view floral tributes and simply soak up the atmosphere.

One million people are expected in central London for Monday's funeral.

London's police force has described the funeral ceremony as the biggest security operation it has ever undertaken.