Russia will “likely be increasingly concerned with the apparent deterioration in security across Crimea”, the British Ministry of Defence claims.
In its latest intelligence update, the ministry highlighted Tuesday’s explosion near Dzhanhoi in annexed Crimea.
A Russian ammunition dump exploded with smoke reportedly rising from the Gvardeyskoye Airbase.
The ministry said: “Dzhankoi and Gvardeyskoye are home to two of the most important Russian military airfields in Crimea.
“Dzhankoi is also a key road and rail junction that plays an important role in supplying Russia’s operations in southern Ukraine.”