Britain's Prime Minister Boris Johnson (R) and his special advisor Dominic Cummings leave from the rear of Downing Street in central London on September 3, 2019, before heading to the Houses of Parliament. - The fate of Brexit hung in the balance on Tuesday as parliament prepared for an explosive showdown with Prime Minister Boris Johnson that could end in a snap election. Members of Johnson's own Conservative party are preparing to join opposition lawmakers in a vote to try to force a delay to Britain's exit from the European Union if he cannot secure a divorce deal with Brussels in the next few weeks. (Photo by DANIEL LEAL-OLIVAS / AFP) (Photo by DANIEL LEAL-OLIVAS/AFP via Getty Images)
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How Boris Johnson's former aide became his biggest enemy
CNN's Bianca Nobilo looks at how Dominic Cummings went from British Prime Minister Boris Johnson's right-hand man to biggest enemy.
2:48 • Source: CNN
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Britain's Prime Minister Boris Johnson (R) and his special advisor Dominic Cummings leave from the rear of Downing Street in central London on September 3, 2019, before heading to the Houses of Parliament. - The fate of Brexit hung in the balance on Tuesday as parliament prepared for an explosive showdown with Prime Minister Boris Johnson that could end in a snap election. Members of Johnson's own Conservative party are preparing to join opposition lawmakers in a vote to try to force a delay to Britain's exit from the European Union if he cannot secure a divorce deal with Brussels in the next few weeks. (Photo by DANIEL LEAL-OLIVAS / AFP) (Photo by DANIEL LEAL-OLIVAS/AFP via Getty Images)
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How Boris Johnson's former aide became his biggest enemy
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