Officials from around the world have started arriving in Wales for the Nato summit in Newport. The two-day event at the Celtic Manor begins on Thursday with world leaders due to arrive at Cardiff Airport’s temporary terminal from Wednesday. One hundred extra staff will be on duty to run the terminal built specifically to handle the Nato traffic. Meanwhile, the Royal Navy’s newest Type 45 Destroyer, HMS Duncan, has docked in Cardiff Bay. The arrivals come as security in Cardiff and Newport is tightened further ahead of the two-day summit. Roads between the Celtic Manor Resort and Cardiff are most likely to be hit, but there are no plans to close the M4. Image copyright European photopress agency Image caption Armed Metropolitan Police officers outside the Celtic Manor ahead of the summit Image copyright BBC news grab Image caption HMS Duncan made its way into Cardiff Docks on Tuesday Image copyright BBC news grab Image caption Crowds of onlookers gather o catch a glimpse of the warship Traffic is already feeling the squeeze in Cardiff with lane closures to make room for security fences. A series of training flights by military helicopters and other aircraft ahead of the summit have been taking place over Newport and Cardiff. People have been urged to allow more time for their journeys in those areas including roads to and from the airport in case of congestion, with a limited number of restrictions. The airport’s chief of staff Jason Thomas said: “It’s an extremely major…more detail