France–Germany relations of the further integration of the EU. They are sometimes described as the "twin engine" or "core countries" pushing for moves. A tram straddling the Franco-German border, across the river Rhine from Strasbourg to Kehl, was inaugurated on the 28th of April 2017 symbolising the strength of relation between the two countries. Both France and Germany track their history back to the time of Charlemagne, whose vast empire included most of the area of both modern-day France and Germany – as well as the Netherlands, Belgium, Luxembourg, Switzerland, Austria, Slovenia, and northern Italy. The death of Charlemagne's son Louis the
France–Germany relations super nation encompassing the whole of Europe. Other practical problems of a possible core Europe are that France and Germany find it hard to establish agreement within various policy areas. Both countries want to strengthen European defence forces, but Germany is cutting its defence spending. Both France and Germany would like to boost the EU's foreign policy, but France no longer supports Germany's call for majority voting in foreign policy. On asylum and migration policies, the two countries have quite different approaches, and progress in other areas of justice and home affairs has been slow. However the two countries manage