Palestinian leader Yasser Arafat was reportedly seriously ill, but his senior advisor Nabil Abu Rudeina on Thursday denied the reports, saying the 75-year-old was in stable conditions and will be airlifted to Paris for treatment.

Arafat has been ill for the past two weeks, suffering from what the Palestinian officials said a stomach flu.

Speculations about Arafat's health conditions have raised fears of an internal power struggle ensuing his death since he has yet to pick a successor.

The following covers key events in his life so far.

Arafat was born on Aug. 24, 1929 in Cairo to a textile merchant father, who was a Palestinian with Egyptian ancestry, and his mother from an old Palestinian family in Jerusalem.

He was named after Yasser, which was believed to honor an Arab victim during the British mandate in Palestine.

After his mother's death when he was five years old, Arafat was sent to live with his maternal uncle in Jerusalem, the capital of Palestine, then under the British rule.

After spending four years there, his father brought him back to Cairo, where an older sister took care of him and his siblings.

Before he was 17, Arafat was smuggling arms in Cairo to Palestine to be used against the Britons and the Jews.

During the war between the Jews and the Arab states in 1948, 19-year-old Arafat broke off his studies at Faud University (later Cairo University) to fight against the Jews in the Gaza area.

After the establishment of the state of Israel in 1948, he managed to get a visa to study at the University of Texas in the United States.

Recovering his spirits and retaining the dream of an independent Palestinian homeland, Arafat returned to Faud University to major in engineering, but spent most of his time as leader of the Palestinian students.

In 1953, Arafat sent a three-word blood letter to an Egyptian leader, which simply read "don't forget Palestine."

After getting a degree in 1956, Arafat worked briefly in Egypt, then resettled in Kuwait, where he was first employed in the public works department, and then successfully running his own contracting firm.

Committed to armed struggles to reverse what Palestinians called the Nabka (Catastrophe), Arafat secretly founded the Fatah movement in 1958.

In late 1964, Arafat left Kuwait to become a full-time revolutionary, organizing Fatah raids into Israel from Jordan.

It was also in 1964 that the Palestine Liberation Organization (PLO) was created.

After the Arab countries' defeat by Israel in the 1967 Six-Day War, Fatah emerged from obscurity of an underground movement to a most powerful and best organized group among the PLO.

In 1969, Arafat became the PLO chairman.

With higher profile came higher personal risk. Initially based in Jordan, Arafat and his fighters were expelled in 1970 and redeployed first in Lebanon, and later in Tunisia.

In November 1974, with the support of the Arab states, Arafat participated in a debate on the Middle East at the UN General Assembly.

His famous words there were: "I have come bearing an olive branch and a freedom fighter's gun. Do not let the olive branch fall from my hand."

While his troops launched an uprising, or intifada, in the West Bank in 1987, Arafat remained in exile for 27 years.

The intifada strengthened Arafat's position by directing the world attention to the Palestinians' plight.

In 1988 came a change of policy. In a speech at a special UN session in Geneva, Arafat declared that the PLO renounced terrorism and supported "the right of all parties concerned in the Middle East conflict to live in peace and security, including the state of Palestine, Israel and other neighbors".

After a setback when the PLO supported Iraq in the Gulf War of 1991, the peace process between the Palestinians and Israel began in earnest, leading to the Oslo Accords of 1993.

In 1994, Arafat shared the Nobel Peace Prize together with Israel's then Prime Minister Yitzhak Rabin and Foreign Minister Shimon Peres for their efforts in the Middle East peace process.

On May 12, 1994, the Palestinian National Authority (PNA) was established. In July, Arafat returned to Gaza.

In early 1996, Arafat was elected chairman of the PNA. He struggled to define his role and keep Israelis and his own countrymen committed to what he termed "the peace of the brave".

When Israel's right-wing government of Benjamin Netanyahu came to power in 1996, the pace of the peace process slowed down considerably.

On Oct. 16, 2000, Arafat, then Israeli Prime Minister Ehud Barak and US President Bill Clinton met in Camp David. They left the meeting with a "statement of intent" to end the violence, but neither side signed on it.

Since December 2001, Arafat has been besieged by the Israeli army in his West Bank headquarters in Ramallah, known as Muqata.

On March 29, 2002, the Israeli cabinet declared Arafat an enemy.

In response to Israeli Prime Minister Ariel Sharon's offer of permanent exile, Arafat said on April 2, 2002 that he would rather die than leave the Palestinian territories.

On April 29, 2003, Mahmoud Abbas was appointed to be the first ever Palestinian prime minister. The move was pushed by Israel and the United States to sideline Arafat, who was accused by both sides of fomenting violence.

On Oct. 21, 2003, Arafat was diagnosed with gallstones.

On Oct. 27, 2004, Israel's media quoted anonymous Palestinian sources as saying that Arafat collapsed earlier and was briefly unconscious.

On Oct. 28, his senior advisor said Arafat would be airlifted to Paris via Amman to receive medical treatment. His doctors said he was suffering from a blood disorder.

The veteran Palestinian leader was a veteran survivor, escaping death in a plane crash, surviving assassination attempts by Israeli intelligence agencies and recovering from a serious stroke.

Before 2001, his life was one of constant travel, moving from country to country to promote the cause for an independent Palestinian statehood, always keeping his movements secret, as he did about his private life, even his marriage to Suha Tawil, a Palestinian woman half his age. Their daughter Zahwa was named after Arafat's mother.