According to Zelensky, there will be drones capable of traversing tens of thousands of kilometers within a couple of years. The US mainland is definitely at risk of drone attack in the near-medium term, IMO.
> One, two, three years — drones will strike ten, twenty thousand kilometers. With reactive engines, they will be very cheap -- Zelensky
https://x.com/nexta_tv/status/2042105223989035429