By the time President Obama took office, Guantánamo was viewed internationally as a symbol of a counterterrorism approach that flouted our laws and strayed from our values, undercutting the perceived legitimacy - and therefore the effectiveness - of our efforts.

In full accordance with the law - and in order to prevent terrorist attacks on the United States and to save American lives - the United States government conducts targeted strikes against specific al-Qa'ida terrorists, sometimes using remotely piloted aircraft, often referred to publicly as drones.

I will not, nor will I ever, publicly divulge sensitive intelligence sources and methods. For when that happens, our national security is endangered and lives can be lost.

Unfortunately, in war, there are casualties, including among the civilian population.

I'm not ideological. I think sometimes when people are ideological, the world's a lot easier. Because it falls into either right or wrong, or black or white, or whatever. To me, I'm still trying to figure out a lot of things.

President Obama is determined that our foreign and national security policies not play into al-Qa'ida's strategy or its warped ideology. Al-Qa'ida seeks to terrorize us into retreating from the world stage. But President Obama has made it a priority to renew American leadership in the world, strengthening our alliances and deepening partnerships.

We know from the material that was recovered from the bin Laden compound that bin Laden was looking at the 10th anniversary of 9/11 as an opportunity to strike yet again at the U.S. homeland.