* The warnings came as the world's largest security body met in Vienna today
* It is hoped talks will push Russia and West towards dialogue easing Ukraine crisis
* Russia has demanded a guarantee that Ukraine will never be admitted to NATO
* But this was unanimously rejected, as were other demands made by the Kremlin
* Later today, Russia hinted it could deploy forces to Cuba and Venezuela
Europe faces its greatest threat of war in the last 30 years, Poland warned today, after Russia threatened 'military means' if its demands over Ukraine were not met and hinted it could deploy forces to Cuba and Venezuela.
Russia's threat on Thursday sharply raised the stakes in its dispute with the West over Ukraine, as the world's largest security body met in Vienna today for talks.
It is hoped the talks will push Russia and the West towards dialogue to defuse a crisis on Ukraine's border where Russian troops have massed, sparking fears of war.
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Polish Foreign Minister Says Europe Is Facing Its Greatest Threat Of War In The Last 30 Years
Europe at greatest risk of war in 30 years, Poland warns -- Jerusalem Post/Reuters
Poland warns Europe closest to war in 30 years -- The Hill
Ukraine tensions: OSCE chair warns 'risk of war' highest in 30 years -- DW
Europe at Highest Risk of War in Decades, Says Top Polish Official -- NTD