A series of high level talks are in the works to avert the threat of war as Russian troops mass by the tens of thousands on the borders of Ukraine

The Russia-Ukraine crisis has entered another day that is expected to be packed with diplomatic efforts to prevent the simmering tensions from boiling over into war

Western powers are ramping up preparations for a possible Russian invasion of Ukraine

Ukraine is the focus of global attention as Russia builds up troops on its border and NATO allies respond

Vladimir Putin has accused the US and its allies of ignoring Russia’s top security demands – but said Moscow is still open for more talks with the West on easing soaring tensions over Ukraine.

As the world watches closely for an escalation in tensions between Russia and Ukraine, experts weigh in on what the first signs of an invasion would look like.