US President Barack Obama will today insist the relationship between the US and UK is key to providing global security after a "difficult decade".
Ahead of a speech to both Houses of Parliament, Obama will meet with prime minister David Cameron at Downing Street for talks.
Expected to be high on the agenda are the Nato operation in Libya and ongoing tensions in the Middle East and north Africa.
The pair will also attend a barbecue being hosted by their wives for families of military personnel involved in joint UK-US missions overseas.
Obama will deliver a keynote speech on US foreign policy in Westminster Hall, a rare opportunity for a foreign leader.
According to the White House, the president will reaffirm the shared interests of both countries, including cooperation on the economy and security and will say that the US has no closer ally in the world than the UK.
Obama will also strike an optimistic note by claiming that the world is "turning a corner" following a "difficult decade".
Tomorrow, the two leaders will both fly to France for the G8 summit of leading industrialised nations in Deauville.


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