 Okay, Derek Wellbank, thank you very much for bringing us up to date on that story. That's our managing editor Derek Wellbank there. Well, he mentioned that the US president might want to talk about Ukraine and obviously NATO is happening. And now to Bloomberg's in-depth reporting on how a $400 drone is rewriting the economics of war in Ukraine. Joining us now from Berlin is Bloomberg's Jake Rudnitsky, who's the reporter behind this exclusive story.