WASHINGTON (CNN) -- The commander in chief's priority is preventing another terrorist attack in the United States, President Bush told CNN's "Larry King Live" Tuesday.

"The most important job I have had -- and the most important job the next president is going to have -- is to protect the American people from another attack," Bush said.

Accompanied by first lady Laura Bush and engaging in a wide-ranging conversation with King, Bush also said that his administration has been involved in stopping specific threats against the United States since the September 11, 2001, terrorist attacks.

"We've learned a lot of information about al Qaeda that we didn't know before," Bush said of intelligence activities during his tenure as president. "We've stopped some specific threats -- we're decimating [al Qaeda's] leadership."