(Edits headline and lead)
MOSCOW (Reuters) - Ukraine launched one of its biggest ever drone attacks on Moscow on Tuesday though all of them were destroyed by air defence systems, Russia's defence ministry said.
The attack came just weeks after the Kremlin was hit in a drone strike that Russia blamed on Ukraine.
Here is what we know so far:
(This story has been refiled to edit the headline and lead paragraph)
(Reporting by Reuters; editing by Guy Faulconbridge)