Donald Trump has replaced US National Security Adviser HR McMaster with former United Nations ambassador John Bolton (pictured).
Bolton, a Bush-era hawk who has backed attacking North Korea and Iran, said his job would be to ensure the president has “the full range of options”. He will be Trump’s third national security chief in 14 months.
The President tweeted to thank General McMaster, saying he had done an “outstanding job & will always remain my friend”.
Last week, Trump fired Secretary of State Rex Tillerson by a tweet, replacing him with former CIA Director Mike Pompeo.
Bolton’s appointment does not require US Senate confirmation and he will take the job on 9 April.
The National Security Adviser is the key counsellor to the president on national security and foreign policy issues, and acts as a conduit for policy proposals coming from various government departments, including defence and state.