Ukrainian missiles hit Black Sea gas platforms, say Russian officials

Reports of strikes come as Russian forces said to be gathering for final assault on Sievierodonetsk and Lysychansk

Russia-Ukraine war: latest updates

Russian officials have said Ukraine launched missile strikes against three gas rigs in the Black Sea south of Odesa, in an apparent escalation of Kyiv's attempts to weaken Russia's maritime dominance.

Seven people were missing and three injured after the strikes, according to the head of occupied Crimea, Sergey Aksyonov, who said a rescue operation with the participation of patrol ships and aviation" was under way.