NATO Secretary General, Anders Fogh Rasmussen, has arrived in Wales ahead of the summit with global leaders.
First Minister Carwyn Jones and Welsh Secretary Stephen Crabb were at Cardiff Airport to greet him, after his plane landed this morning.
Top policeman at Nato Summit says stun grenades were destroyed an hour before they were set to explode in path of world leaders.
'Meet the Forces' day was a crowd puller on Sunday as warships open up their decks in Cardiff Bay following Nato summit.
The day began with a spectacular fly-past over Cardiff and Newport by Nato aircraft.