France's President Emmanuel Macron delivers a speech next to nuclear-powered ballistic missile submarine during his visit to the Nuclear Submarine Navy Base of Île Longue in Crozon, north-western France on March 2, 2026. | Yoan Valat/Pool/AFP via Getty Images The landmark speech given by French President Emmanuel Macron this week — with a nuclear submarine serving as a dramatic backdrop — announcing the expansion of France’s nuclear arsenal, di…