Yeah, although the Romans never had to deal with Molotov cocktails:
The Prime Minister, Azarov, has stated that his government will step down if parliament votes for it, but Azarovs coalition holds a slim majority in parliament, so there's more than a reasonable chance that they'd vote against it, something that the protesters likely know.
The truce is due to end any minute now, and Klitschko has stated that he'll make a speech to the protesters giving details of how todays negotiations have gone. Apparently the city of Rovno has had a regional administration building taken over by protesters, not much more detail from there though.
Time will tell if tonight will be busy or quiet for the law officers of Kiev.
EDIT: Turns out the negotiations were postponed during the day and they're only taking place now. No doubt so that any bad news that leaks out will happen much later in the night so that the law enforcement officers have had a chance to dig in and be ready for it during todays 'truce'.