These kinds of multi national workshops are proof of a very intense cooperation between European countries. Swedes are sometimes accused of being to USA focused which probably also goes for some other European countries. We need these kinds of cooperation in Europe, especially as so much of the academic cred is dictated by the guys on the other side of the Atlantic. This to make sure that we will have influential future.
P.S. But the balance between being intimate enough for fruitful cooperation and open enough for making sure to get enough critique is important and hard to get right, especially if you are dealing with defence or security.