But more on that another time. For now, pictorial highlights of the Obama's abroad:
The gravity of the Obama's mission to the UK was established early, with earnest discussion, analysis and many pictures of Michelle Obama's hair BLOWING IN THE WIND as she stepped off of Air Force One. Dylan was right, the answer my friend, really is...
The Obama's first stop was in Ireland, where one of the locals was generous enough to give Barack a curling stick as a present. From the look in his eye, he appears to be thinking about using it on one of his Repuiblican opponents... or anyone who says he was actually born in Kenya.
Of course, the Irish were pretty excited to find out that Barack was actually an Irishman himself, as his Great Grandfather on his mother's side hailed from there. This guaranteed Barack a warm welcome in the country, and guaranteed that many fine t-shirts, commemorating the fact, would be produced. This one - 'BIFFO: Barrack is from Feckin Offaly' - just one among many.
And like any Irishman, Barack is a man who enjoys a drink... or two... of twenty... So I says, Yeah! You want that money, come and find it, coz I don't know where it is you baloney! You make me wanna... retch.
The Obama's then moved onto England, where the President demonstrated his unprecedented pulling power with the European crowds was undiminished. I mean, George W. Bush used to pull crowds this size, but they were mainly young people there to set off smoke bombs and fight with the riot police, so it wasn't quite the same.
The Obama's would have an audience with the Queen which provided an opportunity for many photos of the world's most powerful man grinning like a nervous schoolboy, while the assembled press waited with bated breath to see if the bloke on the right would say anything about 'darkies' or 'coons.'
BARACK: What do you call this thing again?
THE QUEEN: A napkin.
The Obama's would also spend some time with the Camerons, David and Samantha, Prime Minister and... ummm... wife?... of England. For the chaps, this gave them an excellant opportunity to do one of those things that male politicians love best: getting down to their shirt sleeves and pretending to be like regular folk. Here barbecuing for some military cadets at the back of the PM's residence...
... and here playing table tennis at a local school. Eye of the Tiger Barack!
Looking either really friendly or like they're about to punch on, the First Lady and the... errr... Wife of the PM? Go toe to toe outside Number 10 Downing Street.
And here's a photo of some underling washing the Obama's car... Did I tell you I was a bit obsessed with them? Barack Obama! Barack Obama! Barack Obama! Speaking of the Obama mobile - sometimes referred to as 'The Beast' - here is the undoubted highlight of the Obama's trip:
Even for the coolest couple in the world, not everything goes to plan.