Members of the 1st Battalion Welsh Guards march past Britain's Queen Elizabeth II (L) and Emirati President Sheikh Khalifa bin Zayed al-Nahayan (obscured) during a ceremonial welcome in the grounds of Windsor Castle, in Berkshire, west of London on April 30, 2013. Sheikh Khalifa officially began a State visit to Britain with a cermonial welcome in Windsor hosted by the Queen and the Duke of Edinburgh. AFP PHOTO / POOL / BEN STANSALL
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