Ukraine: 30.000 Russian troops in Crimea

Serhiy Astakhov, aide to the head of border guards service, told Reuters the figure was an estimate and included both troops that had arrived since last week and Russia's Black Sea Fleet, permanently based in the Crimean port of Sevastopol.

Russia, whose forces occupied the isolated peninsula last week, says the only troops it has there are those based in Sevastopol. The Russian troops that have occupied positions across Crimea wear no insignia on their uniforms but drive vehicles with Russian military plates.