The President of the United States Barack Obama has officially begun his state visit to Britain.
The Queen was on hand for a welcome ceremony full of pomp and pageantry. It is only the second time the Queen has received a US leader for a state visit.
Inside Buckingham Palace, where they will be staying for two nights, the Obamas also met the Royal newly-weds, the Duke and Duchess of Cambridge.
There will be plenty of pomp during the three-day trip but also plenty of politics. Both Britain and the United States see the visit as an opportunity to reaffirm their so-called “special relationship”, a relationship Obama and Prime Minister David Cameron say they also see as ‘essential’ for the world.
Obama and Cameron are to announce the formation of a US-British national security council to work together on international challenges and share intelligence.
Obama starts Britain visit