The Egyptian revolution has sparked a wave of protests against autocratic rulers in the Arab world with people in Algeria and Yemen taking to the streets on Saturday.
In Algiers, an estimated 2,000 demonstrators gathered on the central May 1 square for a march through the city to protest the government of President Abdelaziz Bouteflika.
Carrying knives and batons, pro-government demonstrators in Sanaa broke up a protest by around 2,000 Yemenis inspired by the overthrow of Egyptian President Hosni Mubarak.
Yemeni President Ali Abdullah Saleh, trying to ward off protests spreading across the Arab world, has promised to step down when his term ends in 2013. But the opposition has yet to respond to his call.
In Cairo, the new military leadership on Saturday vowed to pave the way for democracy and abide by international treaties.