After the 9-11 attacks, it took about 10 years for the United States government to get Osama bin Laden.

They got him in May 2011.

Now, as of tonight, we know it took another 11 years after that to get bin Laden's brain.

To get the man who was bin Laden's number two in Al Qaeda at the time of 9-11,

the man who took over as al Qaeda's leader after bin Laden was killed by US Navy SEALs.

The string of attacks and murders attributed to Iman al-Zawahari is stomach-turning.

He was the ideological mastermind behind the turn of al-Qaeda and groups like that

toward indiscriminate mass murder of civilians anywhere, including Muslims,

all in the name of Islamic piety.

And how he got there, we now looking back at it, it seems like a straight shot,

but if he sort of dropped in at him at any time in his biography,

he wouldn't have known he was going there.

He was trained as a doctor, he was a trained surgeon.

He was from a respected family in Egypt, born and raised in Cairo.

By the time he was 15 years old, he was a committed radical who wanted to try to impose Islamic

theocracy by force.

He formed his first terrorist cell with the aim of overthrowing the government of Egypt

when he was all of 15 years old.

When Islamic militants did assassinate Egypt's president on Washington, at a military parade

in 1981, Iman al-Zawahari was one of hundreds of Islamic radicals who was tried and imprisoned

for that crime.

He was tortured for years in Egyptian prisons.

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