In testy leadership debate, PM Johnson promises quick Brexit

Prime Minister Boris Johnson doubled down on his Brexit promises on Tuesday, saying only he could take Britain out of the European Union quickly in a testy leadership debate with opposition Labour's Jeremy Corbyn.After the hour-long debate, polls showed the public were split over who was the victor: 51% said it was Johnson while 49% backed Corbyn - a result that analysts said reflected better on the Labour leader, who is trailing in opinion polls.Both leaders tried to undermine the other in the