The European Union's foreign policy chief Catherine Ashton says she wants to ensure Ukraine can safeguard its territorial integrity.
Speaking at the start of high-level talks in Minsk, Ashton said she wanted to "try and support the people of Ukraine to find peace and security, to ensure that they are able to enjoy territorial integrity".
She said Ukraine needed a "future that is economically viable" with "growing and good relations with the neighbours."
Earlier, Russian president Vladimir Putin and Ukraine's Petro Poroshenko shook hands at the meeting - their first since June.
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