Donald Trump names General H.R. McMaster as new national security adviser
US President Donald Trump has chosen army Lt Gen HR McMaster as his new national security adviser.
Mr Trump announced the choice on Monday at his Palm Beach club, Mar-a-Lago.
He said Lt Gen McMaster is "a man of tremendous talent and tremendous experience".
Mr Trump said retired army Lt Gen Keith Kellogg, who had been his acting adviser, will now serve as the National Security Council chief of staff.
The president had been looking for a replacement for retired general Michael Flynn, who was ousted last week.
Mr Trump pushed out Mr Flynn last Monday after revelations he misled Vice President Mike Pence about discussing sanctions with Russia's ambassador to the US during the presidential transition.
Mr Trump said in a news conference on Thursday that he was disappointed by how Mr Flynn had treated Mr Pence, but did not believe Mr Flynn had done anything wrong by having the conversations.
Retired Vice Admiral Robert Harward, Mr Trump's first choice to replace Mr Flynn, turned down the offer.