A look inside OsamabBin Laden's inner thoughts following the tragic events of September 11th. Some of his written letters have just been released. As our YNN's Elaina Athans tells us, there are signs the al Qaida leader felt he was losing control.

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UNITED STATES -- The event that killed Osama bin Laden and had crowds cheering, also lead to a treasure of al Qaida intelligence. Now, documents seized at the hideout where bin Laden was executed have been released, including letters penned by the terroristic leader himself.

Bin Laden calls the United States his main target for attack. He speaks of alternative places outside of Afghanistan and Pakistan to continue operations after the United States' armed forces invaded both countries.

One letter details plans to assassinate President Barack Obama and/or General David Petraeus. Bin Laden explained Obama's death would place the "utterly unprepared" Vice President Joe Biden into the oval office, which would cause the United States to enter into crisis mode.

The letters, according to the federal government, span from late 2006 to last April.

A scholar who reviewed these documents says for the first time, it shows insight into the psychological state of bin Laden shortly before his death, that he appeared a defeated man thirsty to regain control of his regime.

"What international criminal mastermind doesn’t want to be respected and he believed that he was losing that," said SUNY Orange Global Studies Department Chair Paul Basinski.

The documents show there was friction between bin Laden and senior leaders. In a 2010 letter, he says he was alarmed by "increased mistakes." It was written as a bulls eye was put on bin Laden's head and troops were scouring the Middle East to find him.

"Let’s not say bin Laden was powerless, not by any stretch of the imagination," said Basinski. "But he was finding that more and more difficult to do (to maintain control) as the manhunt intensified and he had become of a more marginalize figure within his own organization.”

Thousands of items were reportedly collected from bin Laden's hideout. A total of 17 were de-classified. The public might never see all that was taken, as our country continues its fight against terrorism in a battle bin Baden waged.

To read the documents, head to www.ctc.usma.edu.