The president of Mexico, Felipe Calderon, center left, and Britain's Prince Philip, inspect a Guard of Honour of the 1st Battalion, The Irish Guards, on Horse Guards Parade in London, on the first day of the president's state visit to Britain, Monday, March 30, 2009.
Carriages transporting Britain's Queen Elizabeth II, Mexican President Felipe Calderon, his wife, Margarita Zavala, and Britain's Prince Philip arrive at Buckingham Palace in London, Monday, March 30, 2009.
Mexico's President Felipe Calderon and Britain's Prince Philip, inspect a Guard of Honour of the 1st Battalion, The Irish Guards, on Horse Guards Parade in London, on the first day of the president's state visit to Britain, Monday, March 30, 2009.
Mexico's President Felipe Calderon and Britain's Queen Elizabeth II visit an exhibition of Mexican items from The Royal Collection, in the Picture Gallery at Buckingham Palace, London, Monday, March 30, 2009. President Calderon and his wife were on a four-day State visit to the United Kingdom from March 30 to April 2, 2009.
Britain's Queen Elizabeth II, right, and Prince Philip, left, stand with Mexico's President Felipe Calderon and first lady Margarita Zavala in Buckingham Palace in London, Monday, March 30, 2009, before the state banquet during the state visit of the president to London.
Britain's Queen Elizabeth II, right, seen with Mexico's President Felipe Calderon, as he addresses guests, during a state banquet inside the ballroom at Buckingham Palace, during the state visit of the president to London, Monday, March 30, 2009.
Britain's Queen Elizabeth II, right, is seen with Mexico's President Felipe Calderon, as they toast during a state banquet inside the ballroom at Buckingham Palace, during the state visit of the president to London, Monday, March 30, 2009.
From left; The Duchess of Gloucester; Lady Mayoress Lin Luder; Mexico President Felipe Calderon; the Lord Mayor of the City of London Ian Luder; Margarita Zavala, the wife of Mexico's president; and the Duke Of Gloucester pose for a photo before the state banquet at the Guildhall, in London, Tuesday, March 31, 2009.
Mexican President Felipe Calderon, left, and his wife, Margarita Zavala, third left, bid farewell to Britain's Queen Elizabeth II, second left, and Britain's Prince Phillip, right, at Buckingham Palace in London, Thursday April 2, 2009, after a four day state visit.
Britain's Prince Charles, and former Prime Minister Margaret Thatcher are joined by the first ever women Chelsea pensioners, Dorothy Hughes, 85, left, and Winifred Phillips, 82, right, as they attend the opening of the new Margaret Thatcher Infirmary at the Royal Hospital Chelsea, in London, Wednesday March 25, 2009.
Britain's Prince Charles smells a ladle of food, during a visit to the kitchens of the City Hospital in Nottingham, England.
Britain's Prince Charles, left, patron of The United Kingdom branch of the Friends of the Royal Flying Doctor Service of Australia, talks with the High Commissioner for Australia, his former Press Officer, John Dauth, right, watched by the Chairman of the Directors, Marina Ritossa, during a reception at Clarence House, London.
Britain's Prince Charles and the Duchess of Cornwall visit the Dawoodi Bohra Mosque in Northolt, England. Numbering over a million and settled in over 40 countries, the Shiah Fatemi Ismaili Tayyibi Dawoodi Bohras aim to integrate and assimilate with the cultures of the countries in which they have made their homes.
Britain's Prince Harry arrives to present awards at Westminster Abbey in London.
The Netherlands
Turkish President Abdullah Gul, left, welcomes Netherlands' Prince Willem-Alexander in Istanbul, Turkey, Monday, March 16, 2009, for the opening ceremony of the 5th World Water Forum.
Netherlands' Prince Willem-Alexander takes a picture before the Head of States Summit at the Ottoman-era Ciragan Palace in Istanbul, Turkey, Monday, March 16, 2009, during the 5th World Water Forum.
Japan
Japanese Crown Prince Naruhito, left, Crown Princess Masako, right, and their 7-year-old daughter Princess Aiko wait for a limousine as the crown prince prepares to leave Togu Palace in Tokyo Saturday, March 14, 2009, for Turkey, where he will attend the World Water Forum.
Japanese Crown Prince Naruhito, left, bids farewell to 7-year-old daughter Princess Aiko, center, as Crown Princess Masako looks on at the entrance of their residence Togu Palace in Tokyo, March 14, 2009, before his departure for Turkey to attend the World Water Forum.
Bulgarian President Georgi Parvanov, second right, tells Japan's Prince Akishino about a gold amphora which was excavated in during the Bulgarian Exhibition at the Daimaru Museum in Tokyo.
Thailand
Maha Chakri Sirindhorn, princess of Thailand, receives a bunch of flowers as she arrives for the official inauguration of the Thai pavilion, a gift from Thailand to the city of Lausanne, Switzerland, Tuesday March 17, 2009.