Primary school children have been given a lesson they are unlikely to forget as Barack Obama and David Cameron dropped in to class.
Mr Obama greeted the smiling youngsters of Mount Pleasant Primary School in Welsh saying "bore da" - "good morning" - and then listened to a welcome message, thanking him for being the first serving US president to visit Wales.
The road along Ruskin Avenue, which is usually busy with parents dropping their youngsters off, was faced by the sight of scores of police officers and the presidential convoy pulling up at the school gates.
The president and Prime Minister were in Rogerstone, near Newport, ahead of the Nato summit at nearby Celtic Manor.
Children at the 230-pupil school are among youngsters from across Wales who have written postcards to leaders attending the summit, telling them what they would like to see changed in the world by the time they are adults.
Their messages of hope for the future will be presented to Nato leaders at the summit.
Youngsters were treated to a series of Nato-themed second day back at school.
Army reservist Lieutenant Rachel Broughton, 28, of Tenby, spoke to year five and six pupils about the summit and how Nato encourages co-operation between different nations.
Among the crowds gathered outside was college student Jay Singh, 16.
He said: "It's pretty surreal, Barack Obama being in Rogerstone. It's great that he's come here and shows Newport has plenty to offer and it's not just about Cardiff.
Local councillor Chris Evans, also in the crowd outside the school gates, added it had given the area a big boost.
"It has brought the whole community together," he said. "It's especially good after the recent bad news we've had with 600 job cuts at a bakery firm."
And grandparents Chris and Bronwen Green, both 67, were pleased the president would be addressing the ongoing situation in Ukraine.
Mr Green - waving a flag with the Welsh Dragon, Star Spangled banner and the black, white and blue of Estonia, said: "Our son lives out in Tallin in Estonia - which is only a 120 miles away from Russian tanks. It's understandable people there ate getting quite concerned."
Mrs Green added: "We both like Obama. He seems to have his finger on the pulse."