U.S. President Barack Obama has announced the resignation of his national security adviser.
James Jones, a 66-year-old retired U.S. Marine general who was the NATO supreme commander from 2003 to 2006, had played a leading role in the U.S. relationship with Pakistan.
Obama said Jones "decided to step aside as national security adviser later this month" and would be succeeded by his current deputy, Tom Donilon.
Obama said that Donilon "has a wealth of experience that will serve him well in this new assignment. He has served three presidents and been immersed in our national security for decades.
"Over the last two years there is not a single critical national security issue that has not crossed Tom's desk," Obama added.
"He has helped manage our national security team and the policymaking process and won the respect and admiration of his colleagues in the White House and across the administration."
Jones' resignation is the second high-level staff change at the White House this month. On October 1, Obama announced the departure of his chief of staff, Rahm Emanuel.
compiled from agency reports