President Donald Trump's National Security Advisor General Herbert Raymond McMaster will resign, and be replaced by former U.S. Ambassador to the UN John Bolton, the White House announced Thursday.
"H.R. McMaster has served his country with distinction for more than 30 years," Trump said in the White House statement, and thanked him for his service.
"This work and those achievements will ensure that America builds on its economic and military advantages," he added.
McMaster took the job last February after his predecessor Michael Flynn stepped down due to his alleged involvement in Russian interference in the 2016 election. Later, Flynn pleaded guilty of making false statements and is currently cooperating with Special Counsel Robert Mueller.
"After thirty-four years of service to our nation, I am requesting retirement from the U.S. Army effective this summer after which I will leave public service," McMaster said in the statement.
"I am thankful to President Donald J. Trump for the opportunity to serve him and our nation as national security advisor," he added.
According to the White House, Trump and McMaster "mutually agreed" about the decision that the General would resign from his job.
The White House Press Secretary Sarah Sanders dismissed reports last week that McMaster would be pushed out from his post.
His replacement, Bolton, served as U.S. Permanent Representative to the UN from 2005-2006 and as Under Secretary of State for Arms Control and International Security from 2001-2005.
"He is one of the strongest voices and experts on the full range of national security issues and challenges facing the country," the White House said.
Reports suggest that Bolton was in the White House earlier to dicuss his new position with Trump.
The duo are also reported to meet frequently to discuss foreign policy issues.
Bolton is expected to start his new job April 9.