SFor days now, the world has been watching this old man. Every movement, every word, every nuance of his voice, which was recently so weak, so shaky. It did not sound like the voice of a man who rules the most powerful country in the world should. Nevertheless, he would like to lead the USA for another four years, into his 86th year. But hardly anyone thinks that is conceivable anymore. The participants of this NATO summit in Washington, who are now seeing – and hearing – him up close, know this too. “If you allow me, I would like to end my remarks in a somewhat unusual way,” says Joe Biden at the end of his speech on the 75th anniversary of the alliance. What comes next?