On January 22, 1963, Germany and France signed the Elis e Treaty on Franco-German cooperation. The treaty marks a symbolic moment that heralds the institutionalization of bilateral relations. The Treaty of Aachen (January 22, 2019 in Aachen) takes up the Elis e Treaty and calls for a deepening of European anchorage and solidarity, as well as a strengthening of cross-border cooperation.This book examines the specific challenges faced by political decision-makers...