Emmanuel Macron rolled out the Arc de Triomphe for Frank-Walter Steinmeier's state visit — the German national anthem ringing out in bitter Parisian cold, streets cordoned off for hours, the full pageantry of Franco-German friendship. The symbolism was generous. The substance was thin. Both leaders are lame ducks operating in hostile domestic terrain. The AfD leads German nationwide polls and may soon form its first state government in Saxony-Anhalt. Macron faces potential succession by either Jean-Luc Mélenchon's far left or Marine Le Pen's far right. Student strikes choked Parisian streets during the visit itself. Steinmeier insisted Germany would "play a leading role in Europe" but took no journalist questions and offered no roadmap for how. The flagship defense projects that were supposed to anchor the alliance are crumbling in real time. The FCAS joint fighter jet collapsed in June. The MGCS main battle tank — the supposed backup proof of cooperation — generated its own diplomatic incident when France's Chief of the General Staff publicly stated Germany had withdrawn from the project, only to walk it back a day later as an "ambiguous" remark. German Defense Minister Boris Pistorius had to explicitly declare the project "not dead" — the kind of statement that rarely precedes vitality. The visit's most forward-looking element was a tour of ArianeGroup facilities near Bordeaux, where France manufactures nuclear-capable M51 submarine missiles. Macron has long pushed for a European dimension to France's nuclear deterrent, and with US commitment to European defense wobbling, several countries including Germany have expressed interest in a strategic dialogue. But French nuclear doctrine retains sole decision-making authority over use, and permanent deployment abroad remains off the table. "Forward deterrence" — joint exercises, facility visits — is the outer boundary of what's being discussed. Political scientist Jacob Ross of the German Council on Foreign Relations offered the sharpest diagnosis: both leaders lack a "genuine agenda for Germany, France, and Europe" and represent systems "seeking to respond to 21st-century crises with 20th-century solutions." Macron has proposed bold European initiatives, but Berlin has consistently responded with caution. The one concrete joint initiative — a push to the European Commission on unfair trade competition, aimed at Chinese subsidies flooding European markets — is real but narrow. The structural problem is bilateral paralysis dressed up as partnership. France proposes, Germany hesitates, populists on both flanks gain ground, and the window for coordinated European action narrows. Russia policy is the template: both leaders pursued integration with Moscow, were overtaken by events in 2022, and have been reactive ever since. Neither has articulated a successor doctrine. Both Macron and Steinmeier leave office in 2027 after ten years. This state visit functioned as a farewell tour. The question Ross frames is whether their successors can develop a shared vision — but the institutional machinery for generating that vision barely exists. The Franco-German engine that drove European integration for decades is idling, and the mechanics are leaving the shop.