Ukraine's opposition leaders appeared before protesters early Friday, after talks with President Viktor Yanukovich that went late into the night.
Addressing thousands of people in central Kiev, boxer-turned-politician Vitaly Klitschko gave an account of the talks, saying that "hours of conversation were spent about nothing."
"Long hours of conversations, long hours of conversations about nothing. Now I understand -- to sit down at the same table with the man who has already decided to lie to you is pointless."
Another opposition leader present at the talks, Oleh Tyahnibok, said that the president had agreed to release all protesters that have been detained during the unrest.
The third participant, Arseny Yatsenyuk , said after the talks finished late Thursday there was a high chance the violence could be stopped.
"We had a mission to stop the bloodshed and there is a pretty good chance to stop the bloodshed."
In a sign that he could be right, Yanukovich has called for an emergency parliamentary session next week.
Amid the talks, rallies took place in several cities across the nation, and protesters built more barricades in Kiev early Friday, after opposition leaders emerged empty-handed from the talks.
Violent protests have been raging in the capital since last weekend.
At least three protesters were killed Wednesday in clashes in Kiev, the first deaths in two months of protests.
The anti-government protests flared in late November after Yanukovich decided to walk away from an integration deal with the European Union, in favor of closer ties with Russia.
Kim Min-ji, Arirang News.