Bolton “is headed for the exits, having flown too close to the sun on his regime change efforts for Iran, Venezuela and North Korea”, The National Interest reported on Tuesday, citing sources familiar with the matter.
“Hearing that Trump wants him out,” a former senior Trump administration official told the magazine.
There is speculation in Washington “that there’s now daylight between Trump and Bolton”, the report added.
The fighting has also expanded to include US Secretary of State Mike Pompeo, according to officials. A State Department official and a former White House official both report that Bolton and Pompeo are “fighting all the time”.
A former senior official in the State Department noted that Pompeo is enthusiastic about isolating Iran, but fearful of an actual war that might engulf much of the Middle East.
“John Bolton is the problem … Trump’s national security adviser is getting dangerous...particularly to the president’s ideals,” Douglas Macgregor, a Bolton rival and would-be successor, writes in Spectator USA.
The United States has been ratcheting up economic and military pressure on Iran, with Trump recently urging Tehran to talk to him.
"What I’d like to see with Iran, I’d like to see them call me," Trump told reporters at the White House on Thursday.
But then he stated that he would not rule out the possibility of military action in Iran amid escalating tensions before slamming former secretary of state John Kerry for his involvement in the issue.
His remarks came after Bolton said on Sunday that the United States was sending an aircraft carrier strike group and a bomber task force to the Middle East in a "clear and unmistakable" message to Iran.
The Pentagon announced on Friday that the US was deploying an amphibious assault ship and a Patriot missile battery to bolster an aircraft carrier and B-52 bombers already sent to the Persian Gulf.