Army Gen. Martin Dempsey takes over as the chairman of the Joint Chiefs of Staff on Friday with the retirement of the current chairman Navy Adm. Mike Mullen.
Dempsey made no secret of the fact he differs with his predecessor's view that the growing national debt poses the greatest threat to national security.
According to Dempsey, national security comes from a balance of three U.S. powers: military, diplomatic, and economic.
"You can't pick or choose," he told lawmakers as his Senate confirmation hearing in July.
Like Mullen, Dempsey admits he's still on a steep learning curve when it comes to the subject of cyber warfare.
"I'll confess at the start that my thinking on this is nascent, at best," the 59-year-old told the Senate Armed Services Committee.
In addition to Dempsey, President Obama's security advisors now include the following:
- Defense Secretary Leon Panetta
- CIA Director Leon Panetta
- Marine Gen. John Allen, commander of U.S. and NATO forces in Afghanistan
- Gen. Raymond Odierno, who is replacing Dempsey as Army chief of staff
Demspey's promotion will complete the transition of the president's senior national security team.