For a friendly foreign leader, a visit to the White House can be a visit to the woodshed.
See a pattern yet?
It could be this: The Obama doctrine in foreign policy is to squeeze friends into changing their ways and to disarm American adversaries with charm.
It is a long way from the Bush theme of squeezing enemies and largely ignoring friends. But then, President Bush basically wanted one certain result – no follow-up attack on the US by Al Qaeda. Over seven years, he was successful, although at a cost in lives, civil liberties, and America's reputation.