Countries of Europe, especially Germany and Italy, will be interested in sharing information from this attack, as they face similar threats from Muslim extremists. France, the European Union and Interpol will share information, and given the ability of the terrorists to move freely through Europe, this passing of information will be critical. The passport-free Schengen Area allows for movement through 26 countries in Europe on the motorways and autobahns, so while initially this is an attack on France, these terrorists are a threat to all of Europe.