US ambassador learns Welsh ahead of Nato summit
31 August 2014 Last updated at 11:09 BST
In advance of President Barack Obama's visit to Wales for the 2014 NATO Summit, US ambassador Matthew Barzun has been learning Welsh.
He can be seen rehearsing a welcome speech and even manages to successfully pronounce the name of the Anglesey village Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch, which is the longest place name in Britain.
The two-day summit at Newport's Celtic Manor Resort on 4-5 September will be attended by 150 world leaders.