According to the sources, this is stated in a letter addressed by the Ministry of Defense of the Russian Federation to the military attaché at the Ukrainian Embassy in Russia.

In a letter dated November 26, in particular, it is written that, if Ukraine holds such test launches, the Russian side will in the first place shoot down Ukrainian missiles. Secondly, it will engage the Ukrainian missile launchers.

The Defense Ministry on Friday invited the Defense Attaché at the Embassy of Ukraine in the Russian Federation to hand over a military-diplomatic note in connection with Ukraine’s plans to conduct missile launches near Crimea.

Read alsoRussia deploys anti-aircraft system in Crimea ahead of Ukraine’s missile tests - volunteers (video)"In a document handed over to him (Defense Attaché) the Russian Defense Ministry expressed protest regarding the introduction by the Ukrainian side of illegal restrictions on the use  December 1 and December 2, 2016 of the airspace over the Black Sea off the west coast of the Crimean Peninsula to conduct missile launches," said the Defense Ministry of the Russian Federation.

In response, NSDC Secretary Oleksandr Turchynov has called on the Russian authorities not to panic because of missile drills in Ukraine.

He stressed that the missile tests would be carried out in accordance with all international obligations and commitments in Ukraine’s sovereign airspace.