There has been another major shake-up at the White House.
National Security Advisor, H.R. McMaster has agreed to resign and will be replaced by the former U.S. ambassador to the UN, John Bolton.
This signals a further shift towards hardliners, weeks before President Trump is set to meet with Kim Jong-un.
Kwon Jang-ho reports.
U.S. President Donald Trump once again announced a major White House reshuffle in a tweet on Thursday.
Thanking H.R. McMaster for his service as National Security Advisor, he announced he was handing the role to former UN ambassador, John Bolton, starting April 9th.

The White House later confirmed that President Trump and McMaster had mutually agreed that the career military officer would resign his post and retire.

This comes hot on the heels of Secretary of State Rex Tillerson's firing last week, and Trump nominating CIA Director Mike Pompeo in his place.
However neither sackings were surprising as reports were circulating for a while that the pair didn't always see eye-to-eye with the President.

Both replacements are considered hawkish hardliners, especially Bolton, who has consistently expressed skepticism over dialogue with North Korea, and advocated military action.

Last month, Bolton wrote an opinion column for the Wall Street Journal, offering a legal defense of carrying out a pre-emptive strike on the regime.
A White House official said the timing of McMaster's firing was not related to any one incident, but the upcoming U.S.-North Korea summit slated for May does not seem to be a coincidence.
President Trump appears to be putting together a far more hardline team to strengthen his hand before his meeting with North Korean leader Kim Jong-un.
Kwon Jang-ho, Arirang News.