The US President sacked his hawkish foreign policy adviser last week, revealing deep divisions on major foreign policy issues including nuclear talks with Pyongyang.

President Donald Trump tweeted Monday that Democrats 'didn't want' advisor John Bolton to testify, as he complained he got 'ZERO' fairness in a House impeachment inquiry.

Joe Biden shot down a plan for a witness deal in Donald Trump's impeachment trial in which Republicans would get to question Hunter Biden and they would get to quiz John Bolton.

John Bolton's book contains another revelation about the Ukraine affair that emerged minutes before the Senate was to start debating whether to call impeachment witnesses.

US national security adviser John Bolton has said that North Korea's latest missile tests did not violate pledges made by the state to Donald Trump. Short-range missiles were launched on Tuesday.

John Bolton bashed any future talks between Trump and North Korea and Iran, claiming they are 'doomed to failure.' 'He ripped Trump, without using his name, several times,' one attendee said.

Donald Trump continued to clobber his former national security adviser, claiming his dismissal of John Bolton would strengthen his approach to totalitarian leftist nations.

Trump tweeted early on Wednesday morning that he wished former National Security Adviser John Bolton would have came forward with his complaints when he was getting fired.

Donald Trump launched a vicious attack on John Bolton, claiming Bolton 'begged' him for a job and wanted to take the country into 'World War Six' before writing his 'nasty & untrue book.'

The president fired Bolton following clashes over U.S. policy in Iran, Russia and Afghanistan. But it was his advocacy in April of a 'Libya model' for dealing with North Korea was the final straw.

John Bolton was fired as national security adviser by the president this past September after the two butted heads over key foreign policy issues like Iran, North Korea, and Afghanistan.