Ahead of next week's 2014 NATO summit, US ambassador to the UK Matthew Barzun has been learning Welsh - and has now uploaded his "humbling" outtakes to YouTube.
The short video reveals Mr Barzun's mixed fortunes as he learns the language - including several attempts to say 'Helô'.
He also stumbles over the name of one of Wales' most famous faces, Catherine Zeta Jones.
He does, however, manage to rattle off the 58-character village name 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch', prompting his tutor to commend his efforts.
The video has been widely praised by Welsh-speakers, with many messaging him personally on Twitter.
One Twitter user, Geraint Iwain, described Mr Barzun as a 'class act', saying: "Very impressed with the Welsh video! If only everyone outside Wales would show as much respect to our language as you."
Another user, Alice, commented: "Well done, sir! Welsh is hard even for those who've lived with it all their lives as a second language. Impressed."
Mr Barzun has also uploaded a second attempt at mastering the language, after describing his debut as "less-than-stellar".