UN officials have warned that the crisis is at a high risk of becoming a genocide, as the political crisis has ignited fighting between Christian and Muslim communities.
The last set of rallies ignited fighting in the slums between ethnic groups loyal to the opposition and those loyal to the president.
That, in turn, ignited fighting between government forces and troops loyal to Maj. Gen. Ali Mohsin al-Ahmar, who defected and whose forces have been protecting the protesters for months.
The attack ignited fighting between government forces and the troops loyal to General Ahmar in what has become the new front line of the battle, the Haeel neighborhood, near Kentucky Square.
The government has also disavowed the cross-border raid by Hezbollah that ignited the fighting.
Inspired, they say, by the largely Sunni uprising in Syria, the group has refused to leave the square, even after clashes with security forces last week ignited days of fighting between Sunnis and minority Alawites in Tripoli.
The Israeli newspaper Haaretz wrote of the increased fear among security officials that the hard-pressed settlers, under attack on the roads of the West Bank and Gaza for months, might increasingly resort to vigilante action that could ignite another round of fighting.
An estimated 75,000 people have been displaced by the fighting that ignited in June last year between the Burmese government and the Kachin Independence Organization/Army.
The incident took place on July 12, the day Hezbollah staged a cross-border raid, igniting the fighting with Israel.
A clash between government forces and tribesmen loyal to the Ahmar family, Mr. Saleh's main political rivals, ignited the fighting in the Hasaba neighborhood in northern Sana.
