The cleaners had scrubbed the debating chamber clean before MPs arrived for Wednesday's session in Serbia's National Assembly. Spent smoke bombs, smears of egg yolk and a dusting of white fire extinguisher powder had all been removed from the benches and tables after the mayhem of the previous day.

To say there was disorder in Serbia's parliament would be an understatement. Video shows tear gas and smoke grenades being deployed among the chaos of a recent legislative session. Reports say it was caused by the opposition party in support of students who were demonstrating outside the building.

The Serbian parliament erupted into chaos Tuesday as opposition lawmakers set off smoke grenades and other countermeasures to block last-minute passage of a series of laws initiated by the outgoing government.