He stated that a "large scale anti terrorist operation" was the only way to ensure the safety of the country.
Turchynov made the announcement a day after Russian speaking gunmen and protesters attacked and seized several police stations in eastern Ukraine.
The announcement also followed the deaths of three Ukrainian officers after their vehicle was attacked by pro Russian militiamen, near Slovyansk, Sunday morning.
Ukraine and several western countries accuse Russia of instigating the violence and occupations of government buildings, as an excuse to invade.
As many as fifty thousand Russian troops are encamped within hours of the border.
Russia called the sending of Ukraine's troops "criminal" and reissued their declaration of their right to defend those of Russian ethnicity, in eastern Ukraine.
Much the same reasoning was used as their reasoning for taking over Crimea, in March.
Their invasion of Ukrainian territory has been declared illegal by the international community, but no actions can really be made to force them out.
