Romania Border Patrol with guard dog in the snow. Using the US Defence Department's satellite-based Global Positioning System to track their routes and pinpoint their positions, two Swiss photographers travelled the length of the European Union's new frontier in the East, from the Adriatic to the Baltic, starting at opposite ends and meeting in the middle. The result is a unique visual record of a frontier that has been the subject of two world wars and numerous attempts to draw and redraw lines on maps. It is history in the making as the Iron Curtain to keep out the West is replaced by a European Union buffer against immigration and other unwanted traffic. The countries affected are nearly all scheduled to join the European Union in 2004 or 2006.