Washington: US President Barack Obama said that killing of Osama bin Laden provided an opportunity to defeat al-Qaeda in the Af-Pak region.

However, he said that Laden's death was not an end to the war against terrorism. Osama was killed in a special operation in Abbottabad.

"We have done a great job even before we got bin Laden in degrading their capacity. And we now have the opportunity, we're not done yet, but we've got the opportunity, I think, to really finally defeat at least al-Qaeda in that border region between Pakistan and Afghanistan," Obama said in an interview to a news channel.

"That doesn't mean that we will defeat terrorism. It doesn't mean that al-Qaeda hasn't metastasized to other parts of the world where we've got to, you know, address operatives there. But it does mean we've got a chance to, I think, really deliver a fatal blow to this organization, if we follow through aggressively in the months to come," he said.

These US Special Forces not only killed bin Laden in the middle of the night, but they also had the presence of mind to still gather up a whole bunch of his material, he said.

It will be a "treasure trove of information" that could serve the US very well in the weeks and months to come, he said.
"It's just an indication of the extraordinary work that they did," Obama added.

"We are now obviously putting everything we've got into analyzing and evaluating' all that information. But we anticipate that it can give us leads to other terrorists that we've been looking' for a long time, other high value targets. But also can give us a better sense of existing plots that might have been there how they operated and their methods of communicating," he said.

"As nervous as I was about this whole process, the one thing I didn't lose sleep over was the possibility of taking bin Laden out. Justice was done. And I think that anyone who would question that the perpetrator of mass murder on American soil didn't deserve what he got needs to have their head examined," he said in response to a question.