Barack Obama arrives at Cardiff Castle for Nato dinner

US President Barack Obama has arrived at Cardiff Castle for a working dinner during Wales' Nato summit.

He heads a list of world leaders and heads of government meeting in the city on the first day of the military conference.

They arrived from the Celtic Manor Resort in Newport, where the summit is taking place, and where Prince Charles earlier hosted a reception for the leaders.

President Obama was greeted at the castle by Prime Minister David Cameron, Welsh Secretary Stephen Crabb and Wales' First Minister, Carwyn Jones.