"Europe had to react against this violation of basic principles," Merkel said.

Kiev accused Russia on Friday of sending more tanks and troops into eastern Ukraine and said they were heading towards the rebel...

  Russian President Vladimir Putin told Kiev to let its soldiers surrender to pro-Russian rebels, who spurned a ceasefire in eastern Ukraine...

  The European Union blacklisted more Ukrainian separatists and Russian backers to protest the destabilization of Ukraine.

The Ukrainian military said on Saturday there was no let-up in a pro-Russian rebel offensive in east Ukraine ahead of...

  German Chancellor Angela Merkel told Russian President Vladimir Putin on the phone on Saturday that a four-way summit to discuss...