The evacuation of civilians from the Ukrainian city of Mariupol has stalled as Russia's offensive in the east continues.

Officials in Ukraine's eastern Luhansk region have expressed optimism about evacuating civilians through five "humanitarian corridors" ahead of an expected Russian offensive, urging residents to get out "while it is safe."

The West is the true beginner of the unfolding conflict between Russia and Ukraine, an international relations expert says.

The Russian ambassador to the United States has condemned new Western sanctions against Russia over recent developments in Ukraine, warning that they will be to the detriment of the United States and the West but will not force Moscow to change its foreign policy.

Putin says Russia will consider an appeal from the leaders of two breakaway regions in eastern Ukraine for their recognition as independent.

Pro-Russia separatists in eastern Ukraine announce the deaths of two more civilians as a result of shelling by Ukrainian forces.

Russia test fires nuclear-capable ballistic missiles amid rising tensions with the US and its allies over Ukraine.

Pro-Russia secessionists in eastern Ukraine accuse the West-backed Ukrainian government forces of launching an artillery barrage on a frontline village.

Ukraine’s parliament ratifies a bill to retake control of eastern regions it says are 'occupied' by Russia.

Pro-Russia forces in Ukraine proclaim a new state in eastern territories.