Factbox-Kremlin drone incident: What do we know?

A sign prohibiting unmanned aerial vehicles flying over the area is on display near the State Historical Museum and the Kremlin in central Moscow, Russia, May 3, 2023. REUTERS/Evgenia Novozhenina


(Reuters) - Here's a look at what we know about the alleged overnight drone attack on the Kremlin, and the questions it raises.

WHAT HAPPENED?