Brazilian President Luiz Inacio Lula da Silva (L) and French President Emmanuel Macron attend the launching of the Tonelero submarine at the Itaguai naval base in Itaguai, Rio de Janeiro State, Brazil, on March 27, 2024. President Emmanuel Macron said Wednesday that France would help Brazil develop nuclear technology for submarines, crucial assistance which has been a sensitive topic between the two nations. Macron was speaking during a ceremony to launch Brazil's third French-designed submarine, which will help secure the country's long coastline, dubbed the "Blue Amazon." (Photo by Ludovic MARIN / POOL / AFP)