US President Barack Obama has nominated Ashton Carter, former deputy defence secretary, to be his next defence secretary, replacing Chuck Hagel.
If confirmed for the job by the Senate, Carter will replace Chuck Hagel, outgoing US defence secretary.
Carter has support among Republicans who will take control of the Senate next month.
The 60-year-old has gained a reputation as an expert on hi-tech weapons and military budgets, portraying himself as a reformer intent on making the vast Pentagon bureaucracy more efficient.
While Carter is skilled in weapons programmes and technological trends, he has less experience overseeing war strategy and has never served in uniform - unlike Hagel who served in the military and was wounded in the Vietnam War.
Read more @: Obama chooses Ashton Carter as Pentagon chief
Obama has laid out his nominee. I suspect he will be accepted by the Senate. He is known for his expertise in high tech weapons but has never served in the military. I dont know if that is a problem or not, but some say he does not have enough expertise in the Middle East with that being the hot topic issue within the military.