Anti-government protesters have pushed forward with demonstrations in Ukraine, with reports of the main energy ministry building in central Kiev being besieged and more barricades being erected in the streets. <br /><br />According to the energy minister, Eduard Stavytsky, about 100 protesers attempted to seize control of his ministry.<br /><br />Police have responded with stun grenades and rubber bullets, with half a dozen people said to have been killed in the fighting.<br /><br />Al Jazeera's Nick Spicer reports from Kiev.
