[Jimbuna]

Ukraine troops counter-attacking near the north-eastern city of Kharkiv have reached the Russian border, says the regional governor.

Troops restored a Ukrainian sign marking the border, says Oleh Sinegubov, while video purports to show soldiers at the frontier.

Ukrainian forces have been retaking territory in north-eastern areas in recent days, as Russian forces focus on the Donbas region further south.

Nato chief Jens Stoltenberg says Ukraine could win the war as Russia's invasion is not going to plan.

Sweden’s parliament is debating its government's decision to apply for Nato membership.

Russia has warned Nato expansion would be a "grave mistake" after Sweden and Finland said they wanted to join the military alliance.

One of the biggest ever Nato military exercises in the Baltics is due to begin in Estonia and Latvia.