US President Donald Trump is interviewing candidates for the position of national security adviser.
He has selected four candidates: adviser Keith Kellogg; former UN ambassador John Bolton; Lt Gen H R McMaster; and Lt Gen Robert Caslen.
The role became vacant when Lt Gen Michael Flynn was fired after just three weeks and three days in the job.
Mr Trump’s first choice, Retired Vice Admiral Robert Harward, turned down the role, citing “personal reasons”.
Gen Flynn stepped down after misleading Vice-President Mike Pence over his conversations with Russia’s ambassador to the US.
When asked about speculation that he was not allowed to bring his own staff at the National Security Council, Mr Harward told the Associated Press: “I think that’s for the president to address.”
Retired general and former CIA chief David Petraeus is also no longer a candidate, Mr Trump’s press secretary Sean Spicer said on Saturday.