Ukraine and NATO are concerned by Russia's military build-up in Crimea and Black Sea region which will potentially have further implications for the stability of the region, a joint statement by the NATO-Ukraine Commission says.

"We condemn Russia's ongoing and wide-ranging military build-up in Crimea, and are concerned by Russia’s efforts and stated plans for further military build-up in the Black Sea region, which will potentially have further implications for the stability of the region," the commission's statement reads.

The statement also contains a call to action on Russia to cease Crimea's occupation. "We call on Russia to reverse its illegal and illegitimate self-declared annexation of the Crimean peninsula, which we do not and will not recognize," the document says.

The Commission expressed its deep concern of Crimean Tatars' state on the occupied peninsula. "We are especially concerned by the harassment and discrimination against the Crimean Tatars and other members of local communities," the statement specifies.

In addition, NATO and Ukraine call on Russia to allow international monitoring structures for caring out their essential work in view of the protection of human rights.

The Commission demands Russia observe human rights in Crimea and to solve the situation.

"We once again demand that the Russian de-facto authorities take the necessary measures to address the deteriorating human rights situation in Crimea and to ensure the safety, rights, and freedoms of everyone living on the peninsula," the joint statement reads.