Russia has cut off gas supplies to Ukraine in a dispute over unpaid bills that could disrupt supplies to the rest of Europe and set back hopes for peace.

Ukraine has rejected Russia’s offer of a discount for gas shipments, which president Vladimir Putin touted as a “partnership deal”.

The UN Security Council is to hold an emergency meeting on Ukraine after Russia called for public talks on the growing crisis.

Ukraine’s prime minister has told leaders in the east of the country he is committed to allowing regions to have more powers.