Ammunition explodes at depot in Crimea

Smoke rises over the site of an explosion at a Russian ammunition depot in Crimea (AP)

Fires burned and ammunition exploded at a depot in Crimea on Wednesday, a day after the latest suspected Ukrainian attack on a military site in the Russia-annexed peninsula, highlighting the challenges facing Moscow.

The peninsula, which Russia seized in 2014, was once a secure base that Moscow’s forces have used to launch attacks, and it was a staging ground for the start of the February 24 invasion.