KIEV, Ukraine (AP) — Ukraine's Parliament has asked the U.N. Security Council to address the country's political turmoil.

Lawmakers today adopted a resolution calling for a security council session amid growing tensions as pro-Russian gunmen asserted control over airports in the southern Crimea region.

The resolution also called on Russia to halt steps which it says are aimed against Ukraine's sovereignty and territorial integrity.

Ukraine's interior minister says members of the Russian military are blocking an airport in Ukraine's Crimea region near a Russian naval base.

The interior minister is calling the blockade "military invasion and occupation."

Separately, dozens of armed men in military uniforms without markings are patrolling the airport in Simferopol, the capital of Crimea, as tensions in the country's Russian-speaking southeast escalate.

It's not clear who they are.