FILE - In this April 21, 2006 file photo, Britain's Queen Elizabeth II meets the public during a walkabout to celebrate her 80th birthday in Windsor, England. In the next four days, the normal ebb and flow of British life will give way to a series of street parties, flotillas, outdoor concerts and finally the appearance of an elderly great-grandmother on her balcony to wave to her subjects. The pageantry is very grand and very British. But at the heart of the Diamond Jubilee celebration is a nearly universal sense of appreciation for the reign of Queen Elizabeth II, who is marking 60 years on the throne. (AP Photo/Kirsty Wigglesworth, Pool)
WASHINGTON — President Barack Obama is celebrating Britain's Queen Elizabeth Diamond Jubilee, honoring her 60 years on the throne.
In a videotaped message, Obama says the queen is a "living witness" to the power of the alliance between the U.S. and Britain and a chief source of its resilience.
Obama says that while many U.S. presidents and British prime ministers have come and gone, the queen's reign has endured. The president says he hopes the queen remains on the throne for many years to come.
The president and Michelle Obama were guests at Buckingham Palace last year when the queen hosted them for an official state visit, a rare honor for a U.S. president.