Sir Alan Duncan has quit as a minister at the Foreign Office with a fiery letter in which he makes several thinly veiled attacks on Boris Johnson.
His departure comes a day before the winner of the Tory leadership race is announced and is expected to be followed by a wave of resignations anticipating Mr Johnson taking power.
• Subscribe to ITV News on YouTube: http://bit.ly/2lOHmNj
• Get breaking news and more stories at http://www.itv.com/news
Follow ITV News on Facebook: https://www.facebook.com/itvnews/
Follow ITV News on Twitter: https://twitter.com/itvnews
Follow ITV News on Instagram: https://www.instagram.com/itvnews/