The First Lady Melania Trump waits as U.S. President Donald Trump and Britain's Queen Elizabeth walk across the courtyard to inspect the Coldstream Guards during a visit to Windsor Castle in Windsor, Britain, July 13, 2018. Reuters 
The First Lady Melania Trump waits as U.S. President Donald Trump and Britain's Queen Elizabeth walk across the courtyard to inspect the Coldstream Guards during a visit to Windsor Castle in Windsor, Show more

Iran will be top priority for Donald Trump as he embarks on UK state visit