The US is safer and more secure than it was four years ago, and has reached a turning point after more than a decade of war, the outgoing Defence Secretary Leon Panetta said on Monday.         

"Because of the outstanding dedication of our intelligence and military professionals, America is safer and more secure than it was four years ago, and we have reached a turning point after more than a decade of war," Panetta said in his remarks at the White House.         

US President Barack Obama Monday nominated Chuck Hagel, the former Republican Senator from Nebraska, as his next defence secretary to replace Panetta and John Brennan as his next CIA director.         

"And on that, as we've reached that turning point, we've developed a new defence strategy for the 21st century. We have, with John's leadership, decimated Al Qaeda's leadership and weakened their effort to attack this country," Panetta said in his statement.         

"We have brought wars in Iraq and we will bring the war in Afghanistan to an honorable conclusion. We've opened up opportunities for all Americans to serve in our military. And we continue to strongly support our forces, their families, and our wounded warriors. These are some of the achievements that I am proud of," he said.         

Panetta said after being in public life for five decades he would return to private life and to his home in California.