WIKIPIDEA gives a real fact and name of KGB official who confirms publicly that ZAWAHIRI was in their `custody`.
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He left Egypt in 1985 and made his way to Peshawar, Pakistan, where he worked as a surgeon treating the fighters who were waging holy war against Soviet troops in Afghanistan.
That is where Zawahiri met bin Laden, a prominent Mujahedeen leader and who also had left behind a privileged upbringing to join the fight in Afghanistan. The two became close, linked by their common bond as "Afghan Arabs."
After the war against the Soviets ended, Zawahiri was unable to return to Egypt.
Instead, he joined bin Laden in Sudan, where he planned terror activities, including an attack on the Egyptian Embassy in Pakistan. He was also linked to assassination attempts on several Egyptian politicians.
Ali Mohammed, a fellow Egyptian and Islamic Jihad member living in the United States, testified al-Zawahiri actually visited the United States twice on fund-raising trips in the early 1990s, including to a mosque in Santa Clara, California.
The group, meanwhile, stepped up its violent campaign against the Egyptian government, blowing up its embassy in Pakistan in 1995 and trying to assassinate several top Egyptian politicians.
A new al Qaeda emerges. Al-Zawahiri and Osama bin Laden were indicted for allegedly masterminding the twin bombings of the U.S. embassies in Kenya and Tanzania on August 7, 1998.
After reuniting in Afghanistan, bin Laden and al-Zawahiri appeared together in early 1998 announcing the formation of the World Islamic Front for the Jihad Against the Jews and the Crusaders -- formally merging the Egyptian Islamic Jihad and al Qaeda, bin Laden's group.
The two issued a fatwa, or decree, that said, "The judgment to kill and fight Americans and their allies, whether civilians or military, is an obligation for every Muslim."
"Al-Zawahiri's influence on bin Laden has been profound," Bergen said. "According to a number of people who know both men, [al-Zawahiri] helped [bin Laden] become more radical, more anti-American and more violent."
Some Egyptians traced al-Zawahiri's anger toward the United States to what many Afghan Arabs felt was the CIA's betrayal to support their cause after the Soviets left Afghanistan and the country slipped into tribal anarchy.
In the 1980s he journeyed to Afghanistan to participate in the mujahideen resistance against the Soviet Union's occupation.
There he met Osama bin Laden, who was running a base for mujahideen called Maktab al-Khadamat (MAK);
both of them worked under the tutelage of the Palestinian Abdullah Yusuf Azzam;
later when the MAK fractured al-Zawahiri joined bin Laden in organizing the al-Qaeda group.
In 1990 al-Zawahiri returned to Egypt, where he continued to push Islamic Jihad in more radical directions employing knowledge and tactics learned in Afghanistan.
In 1996, he was considered the most credible threat and a highly lethal terrorist who could strike against the USA.
A warning issued at the time specified suicide bombing as the likely form of attack.
In late 1996 he was detained in Russia for six months by the FSB after he apparently tried to recruit jihadists in Chechnya.
According to the FSB spokesman Sergei Ignatchenko:
"He had four passports, in four different names and nationalities.
We checked him out in every country, but they could not confirm him. We could not keep him forever, so we took him to the Azerbaijani border and let him go."
In 1997 he was held responsible for the massacre of 62 foreign tourists in the Egyptian town of Luxor (November 1997 Luxor massacre), for which he was sentenced to death in absentia in 1999 by an Egyptian military tribunal.
On February 23, 1998, he issued a joint fatwa with Osama bin Laden under the title "World Islamic Front Against Jews and Crusaders", an important step in broadening their conflicts to a global scale.