Washington (CNN) - Prime Minister David Cameron makes his first White House visit as Britain's leader Tuesday.
There will be a number of difficult issues on the agenda, ranging from Afghanistan to the early release from prison of the Libyan convicted of the 1988 Lockerbie airplane bombing that killed 270 people.
But Cameron and Obama also have much in common, although they represent different parts of the political spectrum.
They're a similar age - Cameron is 43 and Obama is 48 - and they both campaigned on the slogan of hope and change. Cameron came to power in May in a historic shift of power in the United Kingdom, about 18 months after Obama made history with his own election as president.