The EU has suspended its trade talks with Ukraine, disappointing the tens of thousands of demonstrators there who are demanding closer ties with the West.
The US Senator and former Presidential candidate John McCain addressed the crowds today, telling them their "destiny lies in Europe."
Harry Smith reports:
There is an urgent need for de-escalation in Ukraine as President Yanukovich tries to calm a country bitterly divided over years of history.
Ukraine's political and economic landscape is stuck between old Soviet masters in Russia and the democratising ideals offered by the EU.