I think I already mentioned the security and military applications that deserve more attention. We have to act quickly on this, to avoid the kind of arms race between countries that would lead to the availability of these killer drones. It would mean that it would be very easy for even terrorists to get hold of these things. That's an example where there's no reason to wait. The red line has been defined—
On April 30th, 2019. See this statement in context.