sentences:  There was a territorial dispute over the ownership of the island between Ukraine and Russia in October 2003.The Russian authorities claimed the 1954 transfer of Crimea to Ukraine had only included the continental parts of Crimea, even though the Tuzla Island had been administratively part of Crimea since 1941.The Russian side started to build a dam from the Taman Peninsula towards the island to revive the eroded peninsula without any preliminary consultations with the Ukrainian government authorities.