US President Barack Obama (C) and First Lady Michelle Obama (L) greet widow Irene Hirano Inouye (R) at the National Memorial Cemetery of the Pacific in Honolulu, Hawaii, December 23, 2012. (AFP)

A tear runs down the cheak of widow Irene Hirano Inouye (R) as she sits with US President Barack Obama (L) during the memorial service for the late Senator Daniel Inouye at the National Memorial Cemetery of the Pacific in Honolulu, Hawaii, December 23, 2012. (AFP)

US President Barack Obama (L) returns to his SUV after visiting the grave site of Stanley Armour Dunham (March 23, 1918 – February 8, 1992), his maternal grandfather, at the National Memorial Cemetery of the Pacific in Honolulu, Hawaii, December 23, 2012. (AFP)

First Lady Michelle Obama (L) watches as US President Barack Obama (C) hugs widow Irene Hirano Inouye (R) as they attend the memorial service for the late Senator Daniel Inouye at the National Memorial Cremetary of the Pacific in Honolulu, Hawaii, December 23, 2012. (AFP)

US President Barack Obama (R) and First Lady Michelle Obama talk as they attends the memorial service for the late Senator Daniel Inouye at the National Memorial Cremetary of the Pacific in Honolulu, Hawaii, December 23, 2012. (AFP)

US President Barack Obama (R) and First Lady Michelle Obama (L) attend the memorial service for the late Senator Daniel Inouye at the National Memorial Cremetary of the Pacific in Honolulu, Hawaii, December 23, 2012. (AFP)

Britain's Queen Elizabeth watches a preview of her Christmas message with a pair of 3D glasses, studded with Swarovski crystals in the form of a "Q", at Buckingham Palace in central London in a photo released December 24, 2012. The Queen will use her traditional Christmas Day message, filmed in 3D for the first time, to pay tribute to the world's athletes for delivering a "splendid summer of sport" at the London Olympics. (REUTERS)
Britain's Queen Elizabeth (L) watches a preview of her Christmas message with a pair of 3D glasses, studded with Swarovski crystals in the form of a "Q", with producer John McAndrew and director John Bennett (R), at Buckingham Palace in central London in a photo released December 24, 2012. The Christmas message to the Commonwealth is to be broadcast in 3D for the first time. (REUTERS)

In this picture taken on December 7, 2012 Queen Elizabeth II records her Christmas message to the Commonwealth which is to be broadcast in 3D for the first time, in the White Drawing Room at Buckingham Palace in London . (AFP)