Russia has urged the West to act to prevent what it calls a “civil war” from breaking out in Ukraine.
Moscow requested an emergency session of the UN Security Council for Sunday.
NATO meanwhile has renewed its concern over the 30-thousand Russian troops amassed on the Ukraine border.
Mirroring events on the ground, diplomatic tensions have risen significantly enough for the United States to warn of tougher sanctions if Russia becomes more involved in the conflict.
The US ambassador to the UN, Samantha Power said: “the forces are doing, in each six or seven cities that they have been acting, exactly the same thing. So certainly it bears the tell-tale signs of Moscow’s involvement. And if actions like the kind we’ve seen over the last (2-3 days) few days continue, you’re going to see a ramping up of those sanctions.”
Russia has responded by warning that peace talks due to take place on Thursday with the US, EU and Ukraine are now under threat.