EXPLAINER: How UK Conservatives can change their leader


              Journalists wait opposite 10 Downing Street in London, Wednesday, July 6, 2022. Treasury chief Rishi Sunak and Health Secretary Savid Javid resigned within minutes of each other, costing British Prime Minister Boris Johnson the support of the men responsible for tackling two of the biggest issues facing Britain — the cost-of-living crisis and surging COVID-19 infections. (AP Photo/Frank Augstein)
            
              British Prime Minister Boris Johnson leaves 10 Downing Street in London, Wednesday, July 6, 2022. A defiant British Prime Minister Boris Johnson is battling to stay in power after his government was rocked by the resignation of two top ministers. His first challenge is getting through Wednesday, where he faces tough questions at the weekly Prime Minister's Questions session in Parliament, and a long-scheduled grilling by a committee of senior lawmakers. (AP Photo/Frank Augstein)
            
              British Prime Minister Boris Johnson gestures as he leaves 10 Downing Street in London, Wednesday, July 6, 2022. A defiant British Prime Minister Boris Johnson is battling to stay in power after his government was rocked by the resignation of two top ministers. His first challenge is getting through Wednesday, where he faces tough questions at the weekly Prime Minister's Questions session in Parliament, and a long-scheduled grilling by a committee of senior lawmakers. (AP Photo/Frank Augstein)
            
              A protester holds a placard with photographs of British Prime Minister Boris Johnson, bottom right, his government cabinet members and Russia President Vladimir Putin, top left, outside the Houses of Parliament, in London, Wednesday, July 6, 2022. A defiant British Prime Minister Boris Johnson is battling to stay in power after his government was rocked by the resignation of two top ministers. His first challenge is getting through Wednesday, where he faces tough questions at the weekly Prime Minister's Questions session in Parliament, and a long-scheduled grilling by a committee of senior lawmakers. (AP Photo/Matt Dunham)