The peace march here in Newport is on its way to the Celtic Manor Resort.
It is a three-mile march from the Cenotaph in Newport to Nato summit itself.
The march is unified really in its opposition to what Nato is doing in various parts of the world, from Ukraine to Afghanistan. They are concerned about issues in Iraq, in Iran and in Syria.
We think there are probably around about 500 protesters, and the plan is when they reach the Celtic Manor, about three or four protesters will be allowed to hand over a petition which will then be taken to the summit itself.
Angus Raffle, 8, says his surprise meeting with the President at Stonehenge was "awesome". His mother says she "squealed like a teenager".
The language has been ramped up at this Nato summit, yet caution appears the order of the day after the mistakes of recent history.
The US President's motorcade pulled up at the school with his black stretch limousine bearing a Welsh flag for the first time in history.