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VIDEO: US President Barack Obama arrives in the UK

US President Barack Obama arrives at Stansted airport for a visit to the UK.

US President Barack Obama and David Cameron will focus on the fight to oust Islamic State (IS) militants from a key Iraqi city during talks in Downing Street.

The pair are also expected to discuss the June 23 referendum ahead of a highly anticipated intervention by the US leader in support of a vote in favour of remaining in the European Union.

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