APTOPIX Mideast Egypt Protest
An Egyptian protester flashes the V-sign as riot police use water canon against protesters in Cairo, Egypt, Friday, Jan. 28, 2011. Egyptian anti-gove...
An Egyptian protester flashes the V-sign as riot police use water canon against protesters in Cairo, Egypt, Friday, Jan. 28, 2011. Egyptian anti-government activists clashed with police for a second day Wednesday in defiance of an official ban on any protests but beefed up police forces on the streets quickly moved in and used tear gas and beatings to disperse demonstrations. (AP Photo/Lefteris Pitarakis)
APTOPIX Mideast Egypt Protest
Anti-government protestors gather outside the ruling National Democratic Party headquarters, as it is engulfed by flames in Cairo, Egypt, Friday, Jan...
Anti-government protestors gather outside the ruling National Democratic Party headquarters, as it is engulfed by flames in Cairo, Egypt, Friday, Jan. 28, 2011. Tens of thousands of anti-government protesters poured into the streets of Egypt Friday, stoning and confronting police who fired back with rubber bullets and tear gas in the most violent and chaotic scenes yet in the challenge to President Hosni Mubarak's 30-year rule. (AP Photo/Tara Todras-Whitehill)
Mideast Egypt Protest
Fires burn in the National Democratic Party ruling party headquarters, after it was set alight by anti-government protesters, in downtown Cairo, Egyp...
Fires burn in the National Democratic Party ruling party headquarters, after it was set alight by anti-government protesters, in downtown Cairo, Egypt, Friday, Jan. 28, 2011. (AP Photo/Ben Curtis)
APTOPIX Mideast Egypt Protest
An Egyptian Army soldier riding in an armored personnel carrier is surrounded by anti-government protesters near Tahrir square in Cairo, Egypt, Frida...
An Egyptian Army soldier riding in an armored personnel carrier is surrounded by anti-government protesters near Tahrir square in Cairo, Egypt, Friday, Jan. 28, 2011. (AP Photo/Ben Curtis)
Mideast Egypt Protest
An anti-government protester is backdropped by a fire set up by protesters near the Tahrir Square, in downtown Cairo, Egypt, Friday, Jan. 28, 2011. ...
An anti-government protester is backdropped by a fire set up by protesters near the Tahrir Square, in downtown Cairo, Egypt, Friday, Jan. 28, 2011. Egyptian activists protested for a fourth day as social networking sites called for a mass rally in the capital Cairo after Friday prayers, keeping up the momentum of the country's largest anti-government protests in years. (AP Photo/Lefteris Pitarakis)
Mideast Egypt Protest
An Egyptian Army armored personnel carrier is surrounded by anti-government protesters near Tahrir square in downtown Cairo, Egypt, Friday, Jan. 28, ...
An Egyptian Army armored personnel carrier is surrounded by anti-government protesters near Tahrir square in downtown Cairo, Egypt, Friday, Jan. 28, 2011. (AP Photo/Ben Curtis)
Mideast Egypt Protest
An anti-government protester burns furniture outside of a looted building, near Tahrir Square, in Cairo, Egypt, Friday, Jan. 28, 2011. Egyptian activ...
An anti-government protester burns furniture outside of a looted building, near Tahrir Square, in Cairo, Egypt, Friday, Jan. 28, 2011. Egyptian activists protested for a fourth day as social networking sites called for a mass rally in the capital Cairo after Friday prayers, keeping up the momentum of the country's largest anti-government protests in years. (AP Photo/Tara Todras-Whitehill)
APTOPIX Mideast Egypt Protest
Police and unidentified people are seen in the streets during a demonstration in Suez, Egypt, Friday, Jan. 28, 2011. Tens of thousands of anti-govern...
Police and unidentified people are seen in the streets during a demonstration in Suez, Egypt, Friday, Jan. 28, 2011. Tens of thousands of anti-government protesters poured into the streets of Egypt Friday, stoning and confronting police who fired back with rubber bullets and tear gas in the most violent and chaotic scenes yet in the challenge to President Hosni Mubarak's 30-year rule. (AP Photo)
Egypt's embattled President Hosni Mubarak said Friday he had asked his Cabinet to resign and promised reforms in his first response to protesters who have mounted the biggest challenge ever to his 30-year rule.
But Mubarak also defended the crackdown by police on tens of thousands of demonstrators that drew harsh criticism from the Obama administration Friday and even a threat to reduce a $1.5 billion program of foreign aid if Egypt escalated the use of force.
A somber looking Mubarak called anti-government protests "part of a bigger plot to shake the stability and destroy legitimacy" of the political system.
The steps announced in a nationally televised speech fell short of protesters' demands for his ouster that have been a constant mantra during four straight days of demonstrations.
"Out, out, out," protesters chanted Friday in violent, chaotic scenes of battles with riot police.
They also demand remedies to widespread poverty in this nation of 80 million.
"We aspire for more democracy, more effort to combat unemployment and poverty and combat corruption," he said.
But those words were likely to be interpreted as an attempt to cling to power rather than take concrete steps to solve some of the more pressing problems facing many Egyptians, primarily unemployment and rapidly rising food prices.
Mubarak also defended the security forces' crackdown on protesters, saying he had given them instructions that the protesters be allowed to express their views. But, he said, acts of violence and vandalism left the security forces with no choice but to react top restore order.
Protesters have seized the streets of Cairo, battling police with stones and firebombs, burning down the ruling party headquarters, and defying a night curfew enforced by a military deployment. It is the peak of unrest posing the most dire threat to Mubarak in his three decades of authoritarian rule.
He said this week's protests struck fear in the heart of the majority of Egyptians concerned about the future of their country.
"Violence will not solve the problems we face or realize the objectives we aspire to," he said. "I will not shy away from taking any decision that maintains the security of every Egyptian," he vowed.