(AP Photo)
(AP Photo)

The situation remains tense in Ukraine as Russia continues to tighten its grip by placing military assets in and around Crimea.

FOX News Radio's Jessica Golloher is in Crimea with more:

Ukraine's Prime Minister is telling Russia to get out:

Arseniy Yatsenyuk: "Russia is to realize they will pay the price"

Arseniy Yatsenyuk says that a military conflict here would threaten the stability of the whole region.

He says the self-proclaimed and illegitimate government here in Crimea is trying to steal the national property of Ukraine. This, as Russian planes have reportedly violated Ukraine's air space and taken over a ferry port.

In Crimea, Jessica Golloher, FOX News Radio.

How should the world react? Could another Cold War be looming?

Watch the VIDEO below for more on that part of the story:

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Click HERE for more on the unrest in Ukraine

Editor's Note: Secretary of State John Kerry will be traveling to Ukraine on Tuesday to discuss the crisis with senior representatives of Ukraine's new government.