The European Union has warned Russia against any "unilateral military actions in Ukraine." The bloc's foreign ministers said they would consider it a "blatant violation of international law."
EU foreign ministers said in a statement after talks in Brussels that the 28-nation EU was "increasingly concerned at the worsening crisis in eastern Ukraine and its humanitarian impact on the civilian population."
More top news
Former Girls Aloud singer Kimberley Walsh is pregnant with her second child, she has revealed.
Chancellor George Osborne will seek to reassure financial markets on Monday morning following Britain's decision to leave the EU.
In his first outing since the referendum result, the lead Leave campaigner has outlined his vision for a post-Brexit Britain.