<sod >Ukraineâs acting president Oleksandr Turchynov issued a warning to Russia that any movement of its troops from their naval base in the southern Crimea region âwill be considered military aggression.< eod>< sod > Ukraine's acting president Oleksandr Turchynov issued a warning to Russia that any movement of its troops from their naval base in the southern Crimea region "will be considered military aggression." Mr Turchynov, who is also the head of Ukraine's armed forces, appealed for Moscow to adhere to the rules of an agreement which allows Russia's Black Sea fleet to be based in Sevastopol until 2042.< eod>