The United States President has confirmed the US is moving to impose additional sanctions on Russia.

Earlier, the British Prime Minister David Cameron said more sanctions will be placed on Russian figures if Moscow doesn't co-operate over the crisis with Ukraine in Crimea.

Barack Obama has signed a new executive order to impose sanctions on individuals and key sectors in the Russian economy.

EU leaders are meeting to discuss the situation in Brussels.

President Obama says the US is continuing to work with other EU countries: