The euphoria has gripped several Arab capitals on Friday night after announcing the resignation of President Hosni Mubarak.
An explosion of joy and thunder of horns greeted the news in Tunisia, where a month of events have been from President Zine el Abidine ben Ali on January 14, while leading the country with an iron hand for 23 years.
From Beirut to Gaza, tens of thousands of people have left their joy by distributing sweets, firing fireworks or gunshots in the air.
Thousands of Jordanians have celebrated the fall of Hosni Mubarak at the Egyptian embassy in Amman shooting fireworks. There are approximately 500,000 Egyptian expatriates in Jordan, where some burned flags of Egypt.
In Baghdad, MPs from all major Iraqi parties have hailed a victory for democracy.
In Mauritania, a member of the Arab League and African Union, the news triggered jubilation in the streets of Nouakchott. Cars paraded in front of the Embassy of Egypt placed under guard, while dozens of cars and pedestrians left for joy.
Social networks on the Internet, where young people behind the protest in Egypt have launched their motion on January 25, echoed Friday euphoria in the streets of Cairo.
In the center of Tunis, thousands of people chanted in chorus: "We are pleased to start this and more will come," a slogan popular in the earlier stages.
"I hope that after this is the turn of (Yemeni President) Ali Abdullah Saleh, has launched Gueddiche Henda, a schoolteacher. Hundreds of people gathered outside the embassy in Egypt, according to press officer of the mission.
The transitional government of Tunisia has expressed "great satisfaction". He paid tribute to the Egyptian people but also to the army "for the high sense of patriotism which she has shown and the major role it has taken to protect Egypt and her children throughout the period difficult as it went through. "
In Gaza, thousands of people took to the streets Friday night to celebrate the news.
"God bless Egypt. It is a day of joy. May God grant that all the corrupt leaders of the world could fall "exclaimed Radou Abu Ali, 55.
Hamas has stepped up security at the border with Egypt where protesters try to force it, as happened in 2008 - with the help of the Islamist movement.
If Europe and the United States showed their relief, Egypt's neighbors fear this wave of protest that has already killed two heads of state.
"This is the popular demonstration that any leader can be overthrown," noted Eugene Rogan, director of Middle East Center at St. Antony's College, Oxford. "For all other regional leaders, it gives serious pause."
"We just hope that this transition will be as easy as possible", told the AP an Israeli official who requested anonymity.
"If the radicals prevail (in Egypt), we have Hamas in Gaza, Hezbollah in Lebanon and the Muslim Brotherhood in Egypt, which would be catastrophic not only for Israel but for the stability of the entire region," judged Dan Gillerman, Israel's former representative to the UN, the U.S. television network Fox News.