The battle for the Donbas has begun in the war in Ukraine so how is Russia hoping to take an eastern region that stretches for 300 miles.

After the humiliation of failing to capture the surrounded capital of Kyiv, has Vladimir Putin learned from his mistakes as he begins the second phase of the invasion?

Can Ukraine’s army continue to defy expectations and hold off the Russian forces?

And how vital is Western support to their efforts?

As he prepares to head east from Kyiv to track the unfolding battle, Global Security Editor Rohit Kachroo tells ITV News Political Correspondent Daniel Hewitt what you need to know.