Donald Trump has fired his National Security Adviser, John Bolton.

In a tweet, the President stated that he "disagreed strongly" with many of Bolton's suggestions, and had therefore asked him for his resignation.

He added that he would be naming a replacement next week.

Bolton is the third person to have served as National Security Adviser since Trump took office.

Cal Thomas and Marion McKeone discussed this story and more from the United States, including the three Republicans set to challenge Trump for the 2020 presidential nomination. Do they stand a chance?

Listen to the interview in full by pressing the play button on this page.