Updated

German Chancellor Angela Merkel says the Europe Union won't waver if the time comes to hit Russia with tougher sanctions over Ukraine.

Merkel says the EU's 29 members each have their own relationship with Russia and there are differences of opinion in how to deal with Moscow. Many EU members depend on Russian oil and gas for their energy needs.

But Merkel says if Russia takes further steps to infringe the territorial integrity of Ukraine, the bloc will act as one and impose economic sanctions.

She told a meeting of her Christian Democratic Party on Saturday: "Make no mistake, as different as we are in Europe, it's to our own good fortune that we are united and together we will reach a decision."