Russian Foreign Minister Sergei Lavrov holds a news conference following talks with US Secretary of State John Kerry, ahead of a disputed referendum in Crimea on Sunday.

Mr Kerry was expected to warn Mr Lavrov that the referendum and Russia's military intervention in Crimea could trigger concerted US and EU sanctions.

He has warned of "very serious steps" if Russia annexes the region.

Russia insisted at the UN on Thursday it did "not want war" with Ukraine.