Thousands gathered on Kiev's Maidan to protest against Moscow. Former Georgian President Mikheil Saakashvili offered his support.
Vladimir Putin has signed a treaty with a Georgian breakaway region. Critics say the move paves the way for Russia to annex South Ossetia.
Observers of the ceasefire in Ukraine have agreed to extend their mandate until next spring. They have complained they are not being given enough access by either side to the front lines.
Thousands of people have taken to the streets of Tbilisi to protest against Russia's support of separatists in two Georgian regions. Abkhazia and South Ossetia broke away from Tbilisi in civil wars in the early 1990s.
Ukrainian President Poroshenko says he wants a greater role for the European Union in monitoring the ceasefire in the country's east. But the EU is skeptical of the proposal, DW's Bernd Riegert writes from Brussels.