President of Nigeria, Muhammadu Buhari is currently in the United states at a Nuclear security summit with the heads of state of various Countries.
He has been roundly criticized in some quarters by Nigerians who say the trip is needless and wasteful and that he has no business being there.
From the footage below, it seems Obama does not agree as he commented that Buhari was doing a good job.
The footage was taken before proceedings began with many of the dignitaries exchanging pleasantries and sharing a laugh.
You can see the video below