Ukrainian President Petro Poroshenko has named Russia as the main military threat to Ukraine in a new military doctrine signed on September 24.
Kyiv and the West accuse Russia of directly backing separatists in eastern Ukraine, something Moscow denies.
Kyiv and the West say Russia has sent troops and weapons to fuel the separatist conflict that has killed more than 7,900 people in Ukraine’s east since April 2014. Moscow denies the charges.
"The doctrine also stipulates scenarios that can endanger [the] military security of Ukraine. The main scenario is full-scale armed aggression of Russia against Ukraine with decisive military-political goals," says the statement on the presidential website.
In December 2014, Russia also introduced a new military doctrine which named NATO expansion as a major external risk.
Based on reporting by Reuters and Interfax