KYIV (QHA) -

- Two years ago, the Russian Federation started a brutal aggression against Ukraine since it wanted to impede Ukraine’s movement into Europe, said the NSDC Secretary Oleksandr Turchynov speaking at the forum on defense and security - 2016, held in Kiev on February 18.

He noted that Russia's aggression against Ukraine, border changes and occupation of a part of the sovereign state is a challenge to the collective security of Europe.

Turchinov stressed that democratic countries must work together for the sake of security both in Europe and in the world, according to a QHA newsman.

QHA