Hundreds of pro-democracy demonstrators speak out in the Yemeni capital Sanaa.
Armoured vehicles came on Sunday - Republican Guard units launching an assault on protesters calling for the
president to relinquish power by shooting tear gas and water canons at protesters.
Witnesses say they used live ammunition to disperse the crowds, and medical sources say that numerous demonstrators were killed.
President Ali Abdullah Saleh has also repeatedly abandoned an Arab-mediated deal to step aside.
But the cracks in his rule appear deeper with each passing day.
Al Jazeera's Gerald Tan reports.
