Such an incident is new in Scotland, there has been nothing like it that I know of since Lockerbie which in itself is not fully comparable since the plane had taken off elsewhere.

Fortunately there has been no loss of life, but the disruptions and inconveniences it has created could have much longer term consequences.

I would urge those planning to visit Scotland not to be put off. After 9/11 many people changed their travel plans for the USA and after 7/7 the same happened here. Terrorists win when people respond to fear.