President Joe Biden and his predecessor Donald Trump romped through more than a dozen states on Super Tuesday, all but cementing a November rematch. According to the head of the Paris office of the European Council of Foreign Relations, Célia Belin, Europe is already beginning to put in place new rhetoric and even new structures to cope with a potential reduction or withdrawal of military support from the US, in the event that Trump wins the presidential election. Belin says the potential doubt over Trump's full military support for Europe means that nations have no choice but to reassess their defence, as well as Ukraine's defence, should Trump abandon Kyiv. She spoke to us in the wake of Super Tuesday for Perspective.