Taking In Some London Sights, the Obamas Display Skill at Official Travel.

LONDON -- They were shown around their rooms at Buckingham Palace by their hostess, Queen Elizabeth herself. They got to meet and have an actual conversation with one of the few couples in the world even more famous than they are: Prince William and his wife, the Duchess of Cambridge (formerly known as Kate Middleton). And when the time came to exchange gifts with the royal family, an exercise fraught with potential public-relations perils, President Obama and his wife, Michelle, were more than prepared. [ABSTRACT FROM PUBLISHER]