According to Ihor Romanenko, ex-Secretary of War, Lieutenant-General of the Reserve, Russian Federation has significantly increased the potential of all three components of its army - the ground forces, the navy and the air force over the four years of annexation, Glavred media says.

“This is a strategic level of assessment, and therefore, in all three components of the Armed Forces of the Russian Federation (ground forces, navy and air forces), the potential has grown significantly in the peninsula over the four years of the annexation of the Crimea. Strengthening of all these armament suggests that Putin will not leave Crimea in the near future, and a strong and lasting pressure from the world community will be required to fundamentally change the situation," Romanenko stated.

The expert also noted that Russian President Vladimir Putin is considering the peninsula (as he repeatedly said) as a fortress, as an "unsinkable aircraft carrier in the southern part of NATO".

Reference: Russian Federation occupied the Crimea in February-March 2014, calling the rigged referendum on March 16 as "the will of Crimeans regarding the joining to Russian Federation". Most countries of the world did not recognize Crimea as Russian territory and imposed a number of economic sanctions. Crimea remains a temporarily occupied territory for Ukraine. The Verkhovna Rada of Ukraine officially declared February 20, 2014, as the beginning of the temporary occupation of Crimea and Sevastopol by Russia. October 7, 2015, the President of Ukraine Petro Poroshenko signed the relevant law.

Mass persecution of the Crimean Tatars and Ukrainians, disloyal to the new "authorities" began immediately following the annexation in the Crimea.