Atest of nerves was under way on the streets of Kiev as riot police dismantled opposition barricades and encampments manned by pro-European protesters.
As heavy snow blanketed the Ukrainian capital, opposition leaders summoned supporters to their main camp on Independence Square, reinforcing barriers and stretching barbed wire across underpass entrances in anticipation of an assault by the police.
Platoons of "self defence" volunteers in workmen's hard-hats and a mix of military uniforms massed in an attempt to face down Interior Ministry troops and the feared Berkut riot police.
"Yes, we are ready to fight if we have to. We stand until the end," said Alexander, the 28-year-old commander of a unit of about 200 volunteers - including 60 trained "professionals" - who had placed themselves between groups of security forces to the east of Independence Square.
Wearing an infantryman's helmet and home-made body armour, the Kiev insurance man admitted that he was nervous about how the night might play out. "There have been a lot of provocations. We'll see what happens," he said.