I am happy to hear that I am supposed to speak German.
I did not know how multilingual the conference was. First I received a letter from the vice-chancellor in German, then, everything printed in English. Herr Professor Kinzig introduces me in English. Alors j’ai preparé un document en Français, si ça ne vous derange pas.
Actually I was a bit unsure in reference to the topic: universities and politics, friends or enemies? I asked some colleagues at my university: What do you think about such a topic? Either I got a contradictory answer or no answer at all.